A7 Smart 1080P WiFi PTZ Security Camera is a versatile wireless surveillance camera designed for home, office, and outdoor monitoring. Featuring 1080P Full HD video quality, PTZ panoramic movement, infrared night vision, motion detection, two-way audio, and wireless WiFi connectivity, the A7 provides an affordable way to improve security and monitor important areas remotely.
With its compact design and smart monitoring features, the A7 Smart Camera is suitable for users who want real-time viewing, family protection, pet monitoring, and property surveillance without complicated installation. Similar smart PTZ cameras commonly combine 1080P resolution, WiFi connection, motion detection, and two-way communication features for convenient remote monitoring.
The A7 Smart Security Camera delivers 1080P Full HD resolution, providing clear and detailed images for everyday monitoring.
The high-definition camera helps users capture:
Compared with lower-resolution cameras, 1080P provides sharper details, making it easier to identify objects and movements.
One of the key advantages of the A7 camera is its PTZ (Pan-Tilt-Zoom) design.
Unlike fixed-angle security cameras, PTZ cameras can adjust their viewing direction to cover a larger area.
Benefits include:
Users can control the camera direction through a connected mobile application, allowing them to check different areas without physically moving the device.
The A7 Smart Camera supports wireless WiFi connectivity, making installation easier without complicated network wiring.
Wireless advantages include:
The camera can be placed in locations such as:
Many smart WiFi cameras use 2.4GHz wireless networks because they provide stable coverage and better wall penetration for home environments.
Security problems can happen at any time, which is why the A7 includes infrared night vision technology.
The camera automatically switches between day and night modes, allowing users to monitor environments even in low-light conditions.
Night vision features help with:
This provides continuous surveillance without requiring additional lighting.
The built-in motion detection function helps users stay informed about unexpected activity.
When movement is detected, the camera can send notifications to the connected device, helping users respond quickly.
Motion detection is useful for:
Smart camera systems often combine motion detection with app notifications and recording functions for more convenient security management.
The A7 Smart PTZ Camera features two-way audio, allowing users to communicate remotely through the built-in microphone and speaker.
This function enables:
For example, users can answer the door remotely or speak to someone inside the home while away.
The camera’s wide viewing capability helps cover more space with a single device.
It is suitable for monitoring:
The PTZ movement further improves coverage compared with traditional fixed cameras.
The A7 Smart WiFi Security Camera supports remote viewing, allowing users to check live footage from smartphones or tablets.
Remote monitoring features include:
Whether users are traveling, working, or outside the home, they can keep track of important areas remotely.
| Feature | Details |
|---|---|
| Product Name | A7 Smart WiFi PTZ Security Camera |
| Resolution | 1080P Full HD |
| Camera Type | Wireless IP Security Camera |
| Movement | PTZ Pan/Tilt |
| Connection | WiFi Wireless |
| Night Vision | Infrared Night Vision |
| Audio | Two-Way Audio |
| Detection | Motion Detection |
| Use | Indoor / Outdoor Monitoring |
| Storage | TF Card / Cloud Storage Support (depending on setup) |
The A7 camera is designed for simple installation. Users can connect it to WiFi, place it in the desired location, and start monitoring through the mobile application.
No complicated security system installation is required.
The camera is ideal for everyday security needs, including:
Parents can check on children remotely and communicate through two-way audio.
Pet owners can watch pets during work hours and interact with them remotely.
The camera helps monitor entrances, rooms, and outdoor areas for unexpected activity.
Small businesses can use it to monitor workspaces and improve security.
1080P Full HD video quality
PTZ rotating camera design
Wireless WiFi connection
Infrared night vision
Motion detection alerts
Two-way audio communication
Remote smartphone monitoring
Easy installation
The A7 Smart Camera is suitable for:
It is a practical choice for anyone who wants basic smart monitoring features without investing in expensive CCTV equipment.
A7 Smart 1080P WiFi PTZ Security Camera offers a strong combination of essential smart surveillance features, including Full HD video, PTZ movement, night vision, motion detection, WiFi connectivity, and two-way audio.
For everyday home monitoring and personal security needs, the A7 provides an easy-to-use and cost-effective solution. Its wireless design and remote access features make it a convenient choice for users who want smarter protection for their home, office, or outdoor spaces.
The post A7 Smart 1080P WiFi PTZ Security Camera Review: A Smart Home Surveillance Camera with Motion Detection and Two-Way Audio appeared first on IGeeKphone China Phone, Tablet PC, VR, RC Drone News, Reviews.
Igeekphone News August 8, 2026 — Xiaomi is reportedly developing a custom 200-megapixel 1-inch camera sensor for its next-generation flagship smartphones, potentially setting the stage for another major leap in mobile photography.
According to information shared by a Chinese tech blogger, Xiaomi has customized a new 200MP sensor with a 1-inch optical format. Interestingly, the sensor is said to use an aspect ratio different from the traditional 4:3 format commonly found on smartphone image sensors.
The blogger also suggested that Xiaomi could potentially skip the rumored Xiaomi 18 Ultra, meaning the new sensor may not debut until the Xiaomi 19 Ultra.
If the report proves accurate, Xiaomi could once again be preparing to push the boundaries of smartphone camera hardware, particularly in the increasingly competitive ultra-premium flagship segment.
Xiaomi has a strong history with large-format smartphone camera sensors.
In July 2022, the company introduced the Xiaomi 12S Ultra, which became the first commercially available smartphone to use Sony’s IMX989 1-inch mobile image sensor.
The sensor was jointly developed by Xiaomi and Sony, with the two companies reportedly sharing the development costs equally.
At the time, Xiaomi founder and CEO Lei Jun said the company would make the sensor available to other smartphone manufacturers after its own launch. The move helped accelerate the adoption of large-format camera sensors throughout the smartphone industry.
The main advantage of a larger image sensor is its ability to capture more light.
In general, a larger photosensitive area can collect more light during an exposure, which can improve image quality, particularly in challenging lighting conditions.
The Sony IMX989 used in the Xiaomi 12S Ultra featured a Quad Bayer pixel architecture with individual pixels measuring approximately 1.6 microns. Through pixel binning, four adjacent pixels can be combined to produce an effective pixel size of around 3.2 microns.
This design allows the sensor to gather significantly more light while maintaining strong image detail.
Compared with the sensor used in the iPhone 13 Pro Max, the IMX989 was reported to provide a substantially larger photosensitive area and improved light-gathering capability.
The difference becomes particularly noticeable in low-light photography, where larger sensors can help produce cleaner images with less noise and improved dynamic range.
The 1-inch sensor strategy has remained an important part of Xiaomi’s Ultra-series photography philosophy.
Last year, Xiaomi introduced the Xiaomi 17 Ultra, which reportedly continued the company’s use of a 1-inch-class main camera sensor.
This made it unusual among Android flagship smartphones in the same premium category, as several competing manufacturers moved toward other sensor formats and multi-camera configurations rather than continuing with a 1-inch main sensor.
Xiaomi’s willingness to maintain the large-sensor approach suggests that the company sees sensor size as an important differentiator in the premium smartphone market.
The rumored new sensor could represent an even more ambitious approach.
A 200MP resolution combined with a 1-inch sensor would provide Xiaomi with a significantly higher native pixel count while retaining the light-gathering advantages associated with a large sensor.
However, resolution and sensor size alone do not determine image quality.
The final results would also depend on the sensor’s pixel architecture, pixel size, readout technology, lens design, image signal processor, computational photography algorithms, autofocus system, and image-processing software.
A 200MP sensor could nevertheless offer several potential advantages.
At native resolution, it could capture a large amount of image information. Through pixel binning, it could also generate lower-resolution images with larger effective pixels, potentially improving low-light performance while maintaining sufficient detail.
The combination could give Xiaomi greater flexibility between high-resolution photography and computationally enhanced low-light shooting.
Another intriguing detail from the leak is that the rumored sensor reportedly does not use the traditional 4:3 aspect ratio.
Most smartphone camera sensors are designed around a 4:3 native imaging format, although manufacturers can crop images into other aspect ratios.
A different native aspect ratio could indicate that Xiaomi is pursuing a customized sensor architecture designed specifically around its imaging system.
At this stage, however, there is not enough information to determine exactly how the unusual aspect ratio would affect the camera experience.
It could be related to image composition, sensor utilization, cropping flexibility, or integration with a particular lens and camera module.
The timing of the rumored sensor is also noteworthy.
The blogger reportedly hinted that the Xiaomi 18 Ultra may not launch, which would potentially push the debut of the new 200MP 1-inch sensor to a future Xiaomi 19 Ultra.
That means the rumored sensor could be several product cycles away from commercial availability.
As with other unconfirmed smartphone leaks, the final product name, launch schedule, sensor specifications, and camera configuration could all change before an official announcement.
Xiaomi has not publicly confirmed the existence of the rumored 200MP 1-inch sensor.
Xiaomi’s progression in large-format mobile photography is worth watching.
The Xiaomi 12S Ultra demonstrated that a 1-inch sensor could be successfully integrated into a mass-market smartphone. Since then, large camera sensors have become increasingly common among premium Android devices.
A move to a customized 200MP 1-inch sensor would represent another step in that evolution.
Rather than simply adopting an off-the-shelf component, Xiaomi could be moving toward more extensive control over sensor design and imaging hardware.
That approach could become increasingly important as smartphone camera competition shifts from simply increasing megapixel counts to optimizing the entire imaging pipeline.
If Xiaomi successfully commercializes the rumored sensor, it could potentially offer several advantages:
However, the real-world performance will depend heavily on Xiaomi’s lens, image processing, autofocus technology, and software tuning.
Xiaomi has already played a significant role in bringing 1-inch camera sensors into mainstream smartphones, and the reported development of a custom 200MP 1-inch sensor suggests that the company may be preparing another ambitious move in mobile imaging.
If the rumors surrounding the Xiaomi 18 Ultra’s absence prove correct, the sensor could eventually debut with the Xiaomi 19 Ultra, potentially giving the company’s next Ultra flagship a major camera advantage.
The most interesting aspect may not be the 200MP resolution itself, but the combination of very high resolution, a 1-inch sensor format, and a customized aspect ratio.
For now, the technology remains unconfirmed. But if Xiaomi can successfully bring such a sensor to market and pair it with strong optics and computational photography, the Xiaomi 19 Ultra could become one of the most ambitious camera phones in its generation.
The post Xiaomi Reportedly Developing Custom 200MP 1-Inch Camera Sensor for Future Ultra Flagship appeared first on IGeeKphone China Phone, Tablet PC, VR, RC Drone News, Reviews.
FaceTime Dual Capture is bringing simultaneous front-and-rear camera streaming to video calls in iOS 27, allowing compatible iPhones to show the caller and their surroundings without repeatedly switching between cameras.
The feature expands technology Apple introduced with the iPhone 17 family. Dual Capture already allows the Camera app to record through the Center Stage front camera and a rear camera at the same time. iOS 27 brings a similar capability directly into live FaceTime calls.
During a call, the front camera can continue showing the speaker while the rear camera displays whatever the iPhone is pointing toward. Someone attending a concert can share the performance and remain visible. A parent can show a child playing without disappearing from the conversation. A person asking for technical assistance can remain on screen while directing the rear camera toward the equipment causing the problem.
Dual Capture removes the awkward sequence of switching to the rear camera, showing something, and switching back to continue speaking face to face. Both perspectives remain available inside the same call.
The normal FaceTime camera control changes from a simple front-or-rear choice on supported iPhones. When the caller activates the rear camera, iOS 27 keeps the front camera visible by default.
The main view displays the rear camera feed while a smaller window contains the front camera image. This picture-in-picture arrangement gives the other participant a continuous view of the caller’s reaction, commentary, or explanation.
FaceTime > Start a video call > Tap the Flip button
Tapping the Flip button turns on the rear camera without immediately removing the front view. The other participant begins receiving both perspectives as part of the FaceTime stream.
The caller can disable the front view when it is no longer needed. This provides a conventional rear-camera presentation for situations where the surroundings should occupy the complete image.
FaceTime > Tap the camera view > Disable the front camera
The exact labels and placement may change before the public release of iOS 27 because the feature is still being tested in beta software. Its basic behavior is already established: the Flip control activates the rear camera while retaining the front camera feed.
Dual Capture does not create two independent FaceTime calls. Both images belong to one video stream, so the caller does not need a second account, device, or invitation.
The feature also differs from screen sharing. FaceTime screen sharing transmits applications and interface activity from the iPhone display. Dual Capture transmits live video from two physical cameras.
Apple has limited FaceTime Dual Capture transmission to the iPhone 17, iPhone 17 Pro, iPhone 17 Pro Max, and iPhone Air. Each model includes Apple’s 18MP Center Stage front camera and the Dual Capture capability introduced in the Camera app.
An older iPhone that supports iOS 27 cannot originate a Dual Capture stream. It continues to use the normal option of selecting either the front camera or a rear camera during a call.
Older models can still receive and display a Dual Capture feed when they are running iOS 27. This allows an iPhone 16 or another supported device to see both views transmitted from an iPhone 17, even though it cannot send the same presentation back.
Both participants need iOS 27 for the new FaceTime layout to work as intended. The transmitting device must also be one of the supported iPhone 17-generation models.
This limitation is based on Apple’s official feature support rather than the simple presence of front and rear cameras. Earlier iPhones have camera hardware capable of operating in several multi-camera applications, but Apple has not extended its native Dual Capture implementation to them.
Third-party applications have offered forms of simultaneous multi-camera recording for years through Apple’s developer frameworks. The difference is that iOS 27 integrates the experience into FaceTime, where users can activate it through the familiar camera-switching control.
Describing FaceTime Dual Capture as retro-compatible with the iPhone 17 does not fully explain its relationship with the hardware. The iPhone 17 family introduced Apple’s native Dual Capture recording in 2025, and iOS 27 now gives that existing camera system another purpose.
Inside the Camera app, Dual Capture produces a saved video containing front and rear views. Apple lists support for recording at up to 4K Dolby Vision at 30 frames per second on the iPhone 17.
FaceTime uses the camera pairing for live communication instead. Network quality, bandwidth, device temperature, and FaceTime processing can affect the transmitted resolution, so users should not assume that a call will preserve the Camera app’s maximum 4K recording specification.
The Center Stage front camera also contributes more than resolution. Its square sensor gives the iPhone greater freedom to adjust framing without requiring the device to be physically rotated. Center Stage can help keep the caller positioned inside the smaller front-camera view while the rear camera follows the subject being shared.
That combination makes Dual Capture more useful than placing two untreated camera feeds beside each other. FaceTime can preserve the speaker’s presence while directing most of the screen toward the event, object, or location being discussed.
The feature may require more processing power and energy than an ordinary single-camera call. Running two camera sensors while encoding and transmitting live video can increase battery consumption and device temperature, especially during long calls over cellular data.
Apple has not published separate battery estimates for Dual Capture FaceTime calls. Users planning extended sessions may want access to power and a stable Wi-Fi connection.
FaceTime Dual Capture arrives shortly before Apple’s expected iPhone 18 generation, making it likely to become part of how the company demonstrates the new phones’ camera and communication abilities.
Apple has not announced the iPhone 18 lineup or confirmed its final camera specifications. Compatibility with FaceTime Dual Capture is therefore expected from the software’s “iPhone 17 and newer” positioning, but individual iPhone 18 models should not be treated as confirmed until Apple presents them.
The software release gives existing iPhone 17 owners access without requiring another hardware purchase. That approach also provides Apple with a working FaceTime feature before the next iPhone launch rather than introducing the camera mode and communication interface at the same moment.
Future hardware could improve the experience through faster processors, stronger image stabilization, upgraded sensors, or more efficient video encoding. None of those additions is required for the supported iPhone 17 family, which already contains the camera system needed to transmit both views.
Dual Capture is only one part of the FaceTime update. Apple is also improving video-call quality when the network connection is weak, addressing a problem that becomes especially relevant when two live camera views require transmission. Traditional Chinese support is joining FaceTime Live Captions as well.
The weak-connection improvement may determine how dependable Dual Capture becomes away from Wi-Fi. A feature designed for travel, events, repairs, and outdoor calls needs to tolerate changes in cellular bandwidth without freezing both views or forcing the session to end.
FaceTime Dual Capture remains part of the iOS 27 beta as Apple prepares the public update for September. Apple can still adjust the interface, performance, device requirements, and picture-in-picture behavior before the completed software reaches iPhone 17 owners.
The post FaceTime Dual Capture: iOS 27’s Biggest Video Call Upgrade appeared first on AppleMagazine.
In its latest image release, the Rubin Observatory previews what a decade of repeated observations could reveal.iPhone 2028 deve refinar o design de bordas curvas, melhorar display, câmera telefoto de 200MP e novo chip A22 Pro.
O post iPhone 2028: principais avanços previstos em display, chip e câmera apareceu primeiro em Blog do Edivaldo - Informações e Notícias sobre Linux.
As new observations reveal the outer edges of IC 1101 for the first time, scientists have confirmed it is the largest known galaxy. The galaxy’s statistics are staggering, containing an estimated 3.4 trillion solar masses of stars and spanning roughly 1.7 million light-years, eclipsing every other known galaxy.
IC 1101 belongs to a class known as brightest cluster galaxies (BCGs), which form as massive galaxies spend billions of years absorbing smaller neighboring galaxies.
The new images are the deepest ever taken of the galaxy, and were revealed in a recent paper accepted for publication in a future issue of Astronomy and Astrophysics, but available now in preprint form on the arXiv server.
Despite their enormous sizes, BCGs are notoriously difficult for astronomers to study. Because they are built through the gradual merger of many smaller galaxies, their outer regions are extremely faint, containing diffuse stellar halos and tidal tails left behind by ancient collisions. These wispy edges often blend into the free-floating gas and stars that fill galaxy clusters, making it difficult to determine precisely where the galaxy ends and the surrounding cluster begins.
Carlos Marrero-de la Rosa of the Astrophysical Institute of the Canary Islands led the new study, focusing on IC 1101, the dominant galaxy at the center of the Abell 2029 galaxy cluster.
The research relied on ultra-deep images captured with the Wide Field Camera at the Isaac Newton Telescope, allowing astronomers to resolve the galaxy’s diffuse outer boundary in unprecedented detail.
With the number of satellites orbiting Earth increasing dramatically in recent years, astronomers have raised concerns about artificial light pollution. In this case, however, the researchers faced interference from a far more distant source: foreground stars within our own galaxy.
These stars, located between Earth and IC 1101, scatter light across telescope images, washing out the extremely faint structures astronomers are attempting to detect. Since the galaxy’s outermost regions are already difficult to distinguish, any additional scattered light significantly reduces image contrast.
To overcome this problem, the researchers constructed a detailed model of how the telescope spreads light using dozens of calibration stars. The model allowed the team to accurately subtract scattered light from more than 250 foreground stars, bringing IC 1101’s faintest structures into much sharper contrast and enabling a more precise measurement of its true extent.
IC 1101’s immense scale becomes even more striking when compared with our own Milky Way. The astronomers measured IC 1101 at roughly 520 kiloparsecs across—about 17 times wider than the Milky Way’s approximately 30-kiloparsec diameter. Even after accounting for all forms of mass, including elusive dark matter, scientists estimate that the Milky Way contains only about 1 to 1.5 trillion solar masses of material, compared with the 3.4 trillion solar masses contained in the stars of IC 1101 alone.
Researchers also found evidence that the giant galaxy continues to grow. They identified eight structures beyond its main edge, two of which align with previously observed X-ray disturbances that suggest ongoing accretion. According to the team, IC 1101 likely collided with another galaxy group between two and three billion years ago, producing a merger that continues to shape the galaxy today.
The paper, “How Large Can Galaxies Be? Ultra-Deep Imaging of IC 1101, the Most Extended Known Galaxy,” is available on arXiv, ahead of later publication in Astronomy and Astrophysics.
Ryan Whalen covers science and technology for The Debrief. He holds an MA in History and a Master of Library and Information Science with a certificate in Data Science. He can be contacted at ryan@thedebrief.org.
Apple has not officially announced any first-party security camera, but multiple reports from analysts and journalists indicate the company is developing one (and possibly related products like a video doorbell) to compete more directly with Amazon’s Ring and Google’s Nest. The effort forms part of a wider smart-home hardware expansion that also includes a home hub and updated speakers.
Core Rumors and Sources
Analyst Ming-Chi Kuo reported in late 2024 that Apple was preparing a wireless smart home IP camera for mass production in 2026, with ambitions for millions of units annually and assembly by Goertek. The device is described as designed for tight wireless integration with other Apple products and expected to leverage Siri and Apple Intelligence.
Bloomberg News’ Mark Gurman has repeatedly covered Apple’s smart-home plans, stating the company is working on multiple types of cameras and home-security products. One reported design is a battery-powered camera lasting several months to a year on a charge. It would include facial recognition and infrared sensors to identify people in a room, supporting automation such as turning lights off when someone leaves or playing preferred music for a recognized family member. Users are expected to place cameras throughout the home for both security and presence-based automation.
A Face ID-equipped video doorbell has also been rumored; it could recognize residents and wirelessly unlock a compatible deadbolt. Reports suggest the doorbell may lag behind the primary security camera in development.
Internal code references to a device codenamed J229 (mentioned in late 2025 reporting) describe capabilities including image capture, alarm-sound detection, and multiple sensors (features obviously consistent with a security camera). Some coverage linked support for it to a spring 2026 software window, though timelines have since been described as more fluid.
Expected Features and Ecosystem Fit
Any Apple camera would almost certainly rely on HomeKit Secure Video, which already provides end-to-end encrypted streaming and recording to iCloud+ (with local analysis on a home hub such as a HomePod or Apple TV). Apple has recently expanded the platform: iOS 27 and related software add 4K support for compatible cameras, AI-generated text descriptions of footage, natural-language search across clips (e.g., “package delivery”), and grouping of noteworthy events across multiple cameras. These AI features reportedly require a higher-tier (2 TB) iCloud+ plan.
An official Apple camera would be expected to offer deeper, native integration than third-party options—potentially stronger on-device intelligence, seamless Siri/Apple Intelligence features, and privacy guarantees aligned with Apple’s usual approach (encrypted video that even Apple cannot access). Specifics on resolution, night vision, field of view, indoor vs. outdoor designs, or exact form factor remain unconfirmed.
Timing and Status
Early reports pointed toward 2026 availability, with some speculation around a spring window or a March 2026 “Apple Experience” event. More recent coverage (as of mid-2026) treats the latter half of 2026 or later as the more realistic window, noting that earlier expectations have slipped and that no official confirmation, pricing, detailed specs, or prototypes have been made public.
Apple already supports a limited selection of third-party HomeKit Secure Video cameras (from brands such as Eve, Aqara, Logitech, and others). A first-party device would give the company direct hardware control and a clearer path to showcase new Home app and Apple Intelligence capabilities.
MacDailyNews Take: Credible info from Kuo, Gurman, and others consistently points to Apple developing at least one battery-powered, privacy-oriented security camera with facial/presence sensing for automation, plus possible related products such as a Face ID doorbell. Everything remains unannounced and speculative on exact design, price, and launch date as of late July 2026. Further clarity will depend on official statements or stronger supply-chain evidence.
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The post Apple’s rumored security camera: Privacy-focused HomeKit device expected as part of broader smart home push appeared first on MacDailyNews.
Conheça o Xiaomi 18, com sua série global e inovações em câmeras Leica, tecnologia Snapdragon e displays laterais.
O post Xiaomi 18: Série com três flagships Leica estreia globalmente com novidades apareceu primeiro em Blog do Edivaldo - Informações e Notícias sobre Linux.
Northwestern University engineers have unveiled an extremely energy-efficient 3D camera, called SpiderCam, inspired by how jumping spiders judge depth before making a calculated leap.
The research team behind the novel device said their technology could help engineers build wearable technologies, assistive devices, robots, drones, and other futuristic technologies that benefit from quickly and efficiently gauging their surroundings.
According to a statement announcing SpiderCam, 3D cameras typically estimate image depth in two ways. The first approach involves captured images from multiple viewpoints and comparing them, and the second involves projecting a light source, often an infrared (IR) laser, and then measuring the reflection.
Although both methods can produce realistic three-dimensional images, they can require significant computing power, additional operational energy, and often expensive hardware such as lasers.
Fortunately, millions of years of evolution have resulted in a creature that possesses a hyper-efficient way of estimating depth: the jumping spider.
“Jumping spiders jump to catch prey, to avoid predators and to get around, and that requires excellent vision,” said Northwestern’s Emma Alexander, the study’s corresponding author and an expert in bio-inspired computer vision. However, the researcher notes that their brains are extremely small, requiring the ability to calculate distances in an energy- and computationally efficient way.
According to Alexander, jumping spider eyes have multiple layers of retinas in each eye, rather than just one as in human eyes. When measuring distance, each retina focuses on an image at a slightly different distance, resulting in some images being blurrier than others.
“They see multiple levels of focus at all times,” Alexander explained. “So, they are always collecting pairs of images.”
After collecting these images in real time, the fly’s poppyseed-sized brain compares their sharpness, yielding a surprisingly accurate depth estimate, as evidenced by the creature’s ability to jump with precision.
Inspired by nature’s hyper-efficient, extremely accurate depth estimation method, Alexander’s team decided to build a 3D camera using the same basic approach.
“We wanted to understand whether we could borrow some of the same principles to create an extremely energy-efficient depth sensor that could be used in resource-constrained situations where users don’t have unlimited access to power,” Alexander explained.
Instead of capturing images at multiple distances, as the jumping spider’s eye does, the Northwestern team’s initial design captures two images of the same scene at different focal lengths. Next, the system uses a custom algorithm to analyze the sharpness of the edges and textures captured in each image. The team said this analysis acts as a “translator between blur and distance” in the fly’s brain, resulting in “depth measurements in real time.”
To best approximate the naturally evolved energy efficiency of a jumping spider’s eye, Alexander’s team built the algorithm directly into a customizable computer chip specifically optimized for energy efficiency called a field-programmable gate array (FPGA).
The final prototype integrating the team’s dual-lens system generates depth maps at 32.5 frames per second. Critically, it generates this level of accurate 3D maps while consuming 624 milliwatts of power. For comparison, the team notes that 624 milliwatts is “less energy than used by a standard nightlight.”
Although the team said that the current version of the SpiderCam is the “first passive FPGA-based 3D camera system to operate below one watt,” they hope to improve its optics and expand its field of view. Once they have a commercial-grade version, the team hopes to integrate SpiderCam into wearable devices and small robots.
Beyond proposed applications, the Northwestern team said that they “envision” a future, ultra-energy-efficient version of the chip capable of “bringing 3D vision to applications where conventional depth sensors are impractical.”
“I’m very interested in settings where you’re very resource constrained and can’t just plug a camera into a wall,” Alexander explained. “For example, it could be deployed in field settings with limited power.”
“Separately, I also think it’s particularly exciting for applications like augmented reality where you’re interfacing with the physical world and need to know the locations of objects around you,” the researcher added.
The study’s co-first authors, Marcos Ferreira and Tianao Li, presented this work at the Computer Vision Foundation’s Conference on Computer Vision and Pattern Recognition (CVPR) in Denver. Complimentary registration is available for members of the media.
Christopher Plain is a Science Fiction and Fantasy novelist and Head Science Writer at The Debrief. Follow and connect with him on X, learn about his books at plainfiction.com, or email him directly at christopher@thedebrief.org.
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