Support Raspberry Pi Model A/B/B+, Pi 2 and Raspberry Pi 4, 3, 3b+.
Accommodate up to four 5MP or 8MP Raspberry Pi cameras on a multi camera adapter board.
All camera ports are FFC (flexible flat cable) connectors, Demo: youtu.be/DRIeM5uMy0I
Cameras work in sequential, not simultaneously. High resolution still image photography demo
Note: No mixing of 5MP and 8MP cameras is allowed. Low resolution, low frame rate video surveillance demo
with 4 cameras
Product description
Compared to previous multi-camera adapter module which can only support 5MP RPI cameras, the new multi-camera adapter module V2.1 is designed for connecting maximum four 5MP or 8MP camera to a single CSI camera port on a Raspberry Pi board. Considering that the high-speed CSI camera MIPI signal integrity is sensitive to a long cable connection, this adapter board does not support stacking and can only connect 4 cameras at maximum. Because It covers most of the use cases like 360-degree view photography and surveillance, adding more cameras will degrading the camera performance.
The previous model work with Raspbian 9.8 and backward, and does NOT work with Raspbian 9.9 and onward, so this model is out to tackle this issue.
Please note that Raspberry Pi multi-camera adapter board is a nascent product that may have some stability issues and limitations because of the cable’s signal integrity and RPi's closed source video core libraries, so use it at your own risk.
Features
Accommodate 4 Raspberry Pi cameras on a single RPi board
Support 5MP OV5647 or 8MP IMX219 camera, no mixing allowed
3 GPIOs required for multiplexing
Cameras work in sequential, not simultaneously
Low resolution, low frame rate video surveillance demo with 4 cameras
High resolution still image photography demo
High Efficiency Image File Format (HEIF) is a container format for individual images and image sequences. It was developed by the Moving Picture Experts Group (MPEG) and is defined as Part 12 within the MPEG-H media suite (ISO/IEC 23008-12). MPEG claims that a HEIF image using HEVC requires about half the storage space as the equivalent quality JPEG. HEIF also supports animation, and is capable of storing more information[citation needed] than an animated GIF or APNG at a small fraction of the size.
Introduced in 2015, HEIF was adopted by Apple in 2017 with the introduction of iOS 11, and support on other platforms is growing.
HEIF files are a special case of the ISO Base Media File Format (ISOBMFF, ISO/IEC 14496-12), first defined in 2001 as a shared part of MP4 and JPEG 2000. This file format standard covers multimedia files that can also include other media streams, such as timed text, audio and video.
HEIC is the container or file extension that holds HEIF images or sequences of images. HEIF borrows technology from the High Efficiency Video Compression (HEVC) codec, also known as h.265. Both HEVC and HEIF are proprietary technologies developed by the Moving Picture Experts Group (MPEG).
HEIF came into the mainstream when Apple made it the default format for its pictures on iOS11 devices and macOS High Sierra. However, other operating systems or websites don’t yet support HEIF and its HEIC file extension, so Apple’s operating systems will automatically convert the images to JPEG when users want to share them with friends who don’t use Apple products.
HEIC files can store not just multiple individual images, but also their image properties, HDR data, alpha and depth maps, and even their thumbnails.
The Raspberry Pi has a port for a camera connector, allowing it to capture 1080p video and stream it to a network without having to deal with the craziness of webcams and the improbability of capturing 1080p video over USB. The Raspberry Pi compute module is a little more advanced; it breaks out two camera connectors, theoretically giving the Raspberry Pi stereo vision and depth mapping. [David Barker] put a compute module and two cameras together making this build a reality.
The use of stereo vision for computer vision and robotics research has been around much longer than other methods of depth mapping like a repurposed Kinect, but so far the hardware to do this has been a little hard to come by. You need two cameras, obviously, but the software techniques are well understood in the relevant literature.
[David] connected two cameras to a Pi compute module and implemented three different versions of the software techniques: one in Python and NumPy, running on an 3GHz x86 box, a version in C, running on x86 and the Pi’s ARM core, and another in assembler for the VideoCore on the Pi. Assembly is the way to go here – on the x86 platform, Python could do the parallax computations in 63 seconds, and C could manage it in 56 milliseconds. On the Pi, C took 1 second, and the VideoCore took 90 milliseconds. This translates to a frame rate of about 12FPS on the Pi, more than enough for some very, very interesting robotics work.
There are some better pictures of what this setup can do over on the Raspi blog. We couldn’t find a link to the software that made this possible, so if anyone has a link, drop it in the comments.
Three-dimensional TV is expected to be the next revolution in the history of television. We propose a 3D TV system that allows for real-time acquisition, transmission, and 3D display of dynamic scenes. http://people.csail.mit.edu/wojciech
As Toshiba Corp. prepares to start selling the world’s first glasses-free 3-D televisions in Japan this week, the Japanese electronics and industrial conglomerate says it plans to go global with a larger model of over 40 inches in the coming fiscal year.
“Glass-less REGZA 3D TV”, the 20-inch 20GL1
12-inch 12GL1
The 20-inch LCD will feature a resolution of 1,280×720 (both for 2D and 3D images). It also comes with a special version of Toshiba’s Cell processor (which is a key element in the PS3, for instance) and has LED backlight. Buyers can expect an HDMI interface, a USB port, LAN, and REGZA Link.
The 12-inch model is considerably weaker, featuring 466×350 resolution and no CELL engine. It also comes with LED backlight, an HDMI interface, a USB port, LAN, and REGZA Link. What’s special about it is the SD card slot (for viewing JPEGs and AVCHD files) and the possibility to view 1Seg programs on it (1Seg is Japan’s digital mobile TV standard).
In Japan, Toshiba plans to sell the 20-inch TV for $2,900 and the 12-inch version for $1,450 (no word yet on international availability).
Head of Toshiba’s TV operations Masaaki Osumi said the new TV, due sometime in the coming fiscal year starting in April 2011, may offer the option of watching 3-D with or without glasses. The company plans to reveal more details on the new glasses-free TV at the annual Consumer Electronics Show in Las Vegas in early January 2011, he said.
Tokyo-based Toshiba continues to push ahead with glasses-free autostereoscopic TV development even as the company and its competitors plow money into marketing 3-D televisions requiring glasses. Competitors have said the technology is still several years from being market-ready for TVs, but Toshiba’s efforts could deter consumers from switching to 3-D sets immediately, based on expectations for glasses-free models to come soon.
The 3D effect.
Toshiba promises that buyers will be able to view 3D images in high quality and without glasses – provided they look at the screen in one of nine distinct viewing angles (more technical background can be found here). The company’s recommended viewing distance is 90cm in the case of the 20-inch model and 65cm in the case of the smaller one.
Toshiba says these TVs are the first of their kind, but generally speaking, naked-eye 3D displays aren’t new. Nintendo’s 3DS will have one, Hitachi has shown one, and NEC has been working on it, too. Sharp prepares a model for e-readers and tablets and announced a glasses-free 3D smartphone for later this year. Japanese maker NewSight even offers a naked-eye 70-inch 3D display.
See Press Release:
Toshiba Unveils World First[1] 3D LCD TVs without Dedicated Glasses
-Toshiba's new Glasses-less 3D REGZA GL1 Series to be available
from end of December -
Tokyo-Toshiba Corporation (TOKYO: 6502) today unveiled the world's first[1] LCD TVs that offer comprehensive 3D[2] capabilities without any need for dedicated glasses. The new "Glasses-less 3D REGZA GL1" series offers two models with screen sizes specifically designed for personal use: the 20-inch 20GL1 and the 12-inch 12GL1. Both TVs will be available in Japan from the end of December.
The new 3D TVs with no need for glasses employ an integral imaging system[3] and a perpendicular lenticular sheet[4] to display smooth, natural images, and Toshiba's image processing technology to create nine parallax images[5] from the original content and create to 3D images. The result is precise rendering of high quality 3D images whatever the viewing angle within the viewing zone[2].
The 20GL1 integrates a high definition LED backlit LCD panel specially designed for 3D capability without any need for glasses that offers approximately four times the pixels of a standard Full HD panel. It also integrates the Cell REGZA Engine designed for 3D capability without glasses and based on the Cell Broadband Engine™[6] to deliver superior multimedia processing. The result of this combination is stunningly sharp, dynamic 3D images.
Toshiba will respond to various needs from the users for LCD TV with 3D capability. This will include larger screen models that use dedicated glasses and personal use LCD TVs without glasses, all offering dynamic, stunning image depth and high image quality. Toshiba will continue to draw on synergies of its semiconductor and image processing technologies to advance REGZA series as the cutting-edge of TV technology, and to create and deliver new value to the market by continuing to expand its line-up, and by anticipating and responding to user needs.
Background to Development
Toshiba introduced the REGZA series as state-of-the-art TVs that make full use of synergies between its semiconductor and image processing technologies. Originally a 2D platform, REGZA TVs now deliver 3D images with superb quality to achieve an unsurpassed 3D experience.
Current 3D TV is based on active shutter glasses that deliver separate images to the left and right eyes. However, the market wants TVs that deliver the 3D experience without dedicated glasses across all content. In responding to this, Toshiba has adopted an integral imaging system that reproduces smooth, natural stereoscopic pictures, without any need for dedicated glasses. The company has channeled its initial efforts into personal-use 3D LCD TVs without glasses and is now commercializing 12- and 20-inch models. With these new TVs, Toshiba will seek to lead the market in 3D TV without glasses and to further increase its market share.
Key Product Features
1. The technology of 3D capability without glasses reproduces smooth, natural high quality 3D images
The new Glasses-less 3D REGZA GL1 series employ an integral imaging system and perpendicular lenticular sheet that can display natural and smooth high quality 3D images.
The integral imaging systems is based on the principal of sampling and collecting form several directions the light reflected from an object, and then faithfully reproducing the light through the display to realize smooth, natural images. Until now, conventional 3D technology without glasses has produced a fall off in image resolution and increased blurring[7] that has prevented practical use. Toshiba employs an LED backlit LCD panel specially designed for 3D content that systematically aligns pixels, and has also adopted a perpendicular lenticular sheet in order to realize precise rendering and natural, high quality 3D images.
Toshiba's technology simultaneously delivers nine parallax images to the LCD panel and controls and optimizes light emission and direction from the center, right and left of the screen to secure a wide viewing angle. The result is optimized display of high quality 3D images whatever the position and angle to the screen of the viewer[2].
This technology is the recipient of the 21st Century Invention Prize for 2010, one of the National Commendations for Invention, from the HATSUMEI KYOKAI, Japan Institute of Invention and Innovation.
2. LCD panel designed for 3D capability without glasses
The 20GL1's high definition LED backlit LCD panel, specially designed for 3D capability without glasses, has approximately four times the pixels of a Full HD panel, approximately 8.29 million pixels. It can combine and display nine parallax images carrying information from nine images created in real time from a single frame. It transmits the final 3D image with a resolution of 1280 x 720 pixels.
Toshiba's LED backlight control system positions 1,440 LEDs directly under the LCD panel to realize bright 3D images. Moreover, each pixel can support the display of red green and blue (RGB) in a layout expressly designed for 3D imaging. Image data from each pixel is replicated nine times and the direction in which they are transmitted is controlled by the lenticular sheet. The result is smooth, natural 3D images that can be viewed from multiple angles without glasses.
The 12GL1 supports the same approach for approximately 1.47 million pixels and integrates an LED panel that can display 466 x 350 pixels.
The 20GL1 LCD panel is the fruit of research with Toshiba Mobile Display Co., Ltd. This was supported in part under the revised budget for FY2009 from the Ministry of Internal Affairs and Communications for "Research and Development on Glasses- Free 3D Image Technologies."
3. Newly developed engine designed for 3D capability without glasses
The 20GL1 integrates the Cell Broadband Engine™[6] and the Glasses-less 3D CELL REGZA Engine, newly developed multi-parallax conversion LSIs designed for superior multimedia processing. High speed arithmetic processing creates nine parallax images from original content and converts it to 3D images with real depth, allowing Toshiba to achieve precise rendering of natural, high quality 3D images.
For the 12GL1, the newly developed engine designed for 3D capability without glasses combined with Toshiba's image processing LSIs and multi-parallax LSIs creates the 3D image.
4. Focus on Environmental Considerations
(1) Integration of LED backlight
The Glasses-less REGZA GL1 Series TVs are environmentally conscious products that integrate energy-saving LED backlighting. The backlights are free of mercury, which occurs at trace levels in cold cathode fluorescent (CCFL) backlights.
(2) Energy-saving features
The 20GL1 offers a number of energy-saving features:
- Power consumption is controlled by maintaining optimum image brightness.
- Automatic stand-by if no command is received from the remote controller for approximately three hours.
- Automatic stand-by mode if, when the TV is set to external input, no signal is received for approximately 15 minutes.
(3) Effective use of resources
All components that use over 25g of plastic indicate the materials used and are designed for recycling. Use of polylactic resin, a biodegradable, vegetable-based plastic 100% derived from corn, contributes to reduced consumption of petroleum and to lower CO2 emissions.
(4) RoHS[8] and J-Moss[9] (Green Mark)compatible
The REGZA GL1 Series contributes to moves toward environmentally conscious products by achieving full compliance with the EU's RoHS and Japan's J-Moss.
About Toshiba Group Environmental Vision
Environmental Vision 2050 guides Toshiba Group in achieving a ten-fold increase in overall eco-efficiency by 2050, compared to 2000, in order to contribute to the future of a sustainable Earth as a "corporate citizen of planet Earth". Toward this goal, we promote initiatives aimed at realizing a world where people lead affluent lives in harmony with the Earth, based on the concept of three "Greens": Greening of Process (environmentally conscious manufacturing process), Greening of Products (environmentally conscious products), and Greening by Technology (contributing through environmental technology). Toshiba Group promotes its environmental initiatives under the global brand "Toshiba eco style."
