“Ovrvision Pro” Development 2nd Report on September 2015.

2015/9/30 Release

Thank you for supporting Ovrvision. This is the second report in September 2015 about development of Ovrvision Pro, which is to be shipped in November 2015.

Here is the report of the current schedule. The development is now about two weeks late and has advanced to the camera-board manufacturing phase (mass production). The reasons for the delay are the part change due to the shortage in the camera chip supply and associated design change of the lens and lens holder. We apologize for the delay and plan to post an extra report again in mid-October that contains the expected date of shipment.

Website: http://ovrvision.com/entop
Pro webpage: http://ovrvision.com/buy-en/

The product performance identified is described below. The design details that changed after the release of Indiegogo are written in red.

*Product performance table*

While artistic designs were considered during the initial concept, a simpleconventional design was adopted because the LED for the Oculus Rift DK2 tracker is hidden with a weight that should be as light as possible. In addition, the customized replaceable cover was designed to be attached to various types of head mount displays (HMD).



Board design

2. Interface
The latest USB standard, USB 3.0 (SuperSpeed), is mounted to provide the transmission speed of 5 Gbps (500 MB/s). The accessory USB 3.0 cable is a high-quality Elecom product.

3. Resolution, frame rate, and functions
The following six modes are compliant with UVC and are available only for the USB 3.0 connection. The transfer data format is 16-bit raw Bayer (8 higher-order bits for the left eye and 8 lower-order bits for the right eye).
・2560 x 1920 @ 15fps X 2
・1920 x 1080 @ 30fps X 2
・1280 x 960 @ 45fps X 2
・1280 x 800 @ 60fps X 2 (VR Mode)
・ 640 x 480 @ 90fps X 2
・ 320 x 240 @ 120fps X 2
As for dynamic range, wide dynamic range (WDR) is supported to achieve 69 dB, and camera capture sensitivity is 1300 mV (lux-sec).

Camera control functions supported (UVC)
*Exposure Time (automatic mode available) (absolute)
*Hue (automatic mode available)
*White Balance Temperature (automatic mode available)
*White Balance Component (automatic mode available)
*Backlight Compensation
*Power Line Frequency(50Hz,60Hz)

4. Lens
The camera employs an EFL 2.5 F/1.8 wide-angle lens. The widest angle of view is 115° horizontal and 100° vertical. In addition, a high-grade metal lens holder fastens the lens with a screw and the lens is secured as shown in the picture below.


5. Latency (delay)
The wideband USB 3.0 communication and raw data transfer result in low transfer latency of around 50 ms between the camera on OvrvisionPro and a PC. * The transfer rate can be slower depending on the PC band performance.

6. Stereo image synchronization
Though built-in FPGA or ASIC for stereo image synchronization was planned, the function is provided as a camera chip function of the CPU firmware in the USB controller, which contributes to lower latency and saves energy. The embedment of FPGA is now eliminated to achieve low-latency operation only on USB bus power and a separate power supply from an AC adaptor is no longer required.

7. Customizable MPU and general-purpose interface (GPIO)
The specifications of the USB MPU firmware and the hardware for mounting on OvrvisionPro will be published as open source so that users can customize OvrvisionPro as desired. The board has a GPIO interface for electronic control of LED synchronization and timing of movie recording. Unlike Ovrvision 1, the embedded EEPROM has a region to store the user configuration, and the settings for distortion correction can be recorded.

8. SDK: Image/drawing processing
The program to process images from OvrvisionPro is a GPU program (OpenCL implemented) for separation into two channels, conversion from Bayer to RGB, and distortion correction. While drawing by CPU processing took more than 80 ms previously, this modification to GPU processing reduced the time to 60 ms or less in total even at higher resolutions, leading to a reduction in visually induced motion sickness (VIMS).
* Note that the values vary depending on GPU performance.

9. SDK: Functions (AR/Hand Tracking/Chroma-key)
Regarding the augmented reality (AR) function, the standard marker AR function uses the ArUcoAR framework and is ready to use on OvrvisionPro. For the Hand Tracking function, extraction of the flesh color to recognize hands and tracking by the finger tracker are planned to be offered. Three-dimensional models can be intuitively touched and operated. In addition, color extraction technology and the use of a green or blue background enable 3D synthesis as for a movie. * Some functions will be published in turn.

■ Information for your purchase ■
The camera has been sold at 415.00 USD since early July 2015.
We will accept orders for shipment at the end of November until the report in mid-October is issued, and you can now buy one on the OvrvisionPro page.
Purchase page: http://ovrvision.com/buy-en
Contact us for an estimate, issuance of the bill, and bank transfer payment for companies and schools.
* The shipment date and time will be announced in the report in mid-October.
Contact: info@ovrvision.com
Personnel in charge: Kikegawa