This morning, OPPO officially released a full-link color management system that supports full-link 10bit picture and video shooting. This is the first time that the mobile phone industry supports full-link 10bit image and video shooting .
OPPO Full Link Color Management System Core
The complete manifestation of a photo needs to be collected, calculated, encoded, stored, decoded, and displayed. The lack of standard at any step cannot display the picture information correctly and perfectly. OPPO full-link color management system raises the image information of each step to a very high standard.
collection
OPPO’s full-link color management system has 10bit image and video information collection capabilities, and the first hardware-level stacked DOL-HDR technology. DOL-HDR supports continuous output of long, medium and short exposure frames, eliminating the output time interval of different frames. Compared with the traditional time-domain multi-frame HDR technology, its signal-to-noise ratio is better, and it can avoid ghosting, and has a natural advantage in the dynamic range.
Operation-Encoding
OPPO has fully upgraded more than 20 self-developed image algorithms including distortion correction, image super-resolution, and AI dazzling.
storage
The full-link color management system will use the HEIF format to store more color information.
- The HEIF format uses a more efficient video compression format HEVC/H.265, and the size is only about 50% of JPEG.
- The HEIF format supports up to 16bit color depth, higher image quality, and can integrate HDR and wide color gamut.
- In addition to still images and metadata such as EXIF and I ICC color profile files, the HEIF format can also store transparent layers, depth of field information, as well as animations, continuous image sequences, video, audio, etc.
- Compared with 8bit image data in JPEG format, HEIF format can cooperate with the encapsulation of information such as HDR and color depth, allowing HEIF format to record and display brighter, more vivid and vivid content.
Decoding-rendering
OPPO reconstructed the link from system decoding to rendering to solve the problem of Android’s incompatibility for 10bit image shooting.
- Decoding: Reconstruct the native 8bit image decoder and develop a decoding scheme compatible with 10bit images.
- Memory data: Transform the native memory data and design a new memory storage structure that can process 10bit image data.
- Rendering: Add adaptation entry and re-adapt image information.
display
OPPO’s full-link color management system has high standards in screen debugging, white point calibration, and color gamut management.
In the screen calibration link, OPPO uses high-precision optical instruments to collect the original screen data, analyze and generate a high-precision 3D-Lut. After 3D-Lut is updated to the display processing module of the mobile phone, finely adjust the screen Gamma value and color range, and correct almost all possible display calibration problems such as higher-order nonlinear properties, color crosstalk, hue, saturation, etc.
OPPO uniformly uses D65 as the standard color temperature of the white point for the sRGB and DCI-P3 color gamuts, ensuring the consistency of the color temperature of different color gamuts, and also realizes the color gamut adaptation of DCI-P3 and sRGB images.
On the DCI-P3 color gamut screen, the DCI-P3 picture is displayed directly according to the content of the picture without processing. For sRGB pictures, if the color gamut mapping is not done, the picture display will be over-saturated. The reason is that the color gamut is forcibly stretched when the sRGB picture is mapped to the P3 screen. OPPO performs linearization and inverse linearization on the RGB coordinate data twice, and finally displays it accurately on the DCI-P3 screen.
OPPO full-link color management system realizes the correct conversion mapping between different color gamuts. OPPO stated that it will make color management into an SDK in the future and open it to a wide range of third-party apps to improve the color gamut management level of the Android ecosystem.
OPPO Color Compensation System 2.0
Through large-scale quantitative and qualitative research on the global color weak population, OPPO has also significantly upgraded the color compensation system, bringing OPPO Color Compensation System 2.0.
Users can select the corresponding mode according to their own visual situation, use a more accurate and precise color check method to detect the user’s color perception ability, and then combine the sample data obtained in the previous period to find the best color expression and color resolution. Good balance point, matching the optimal solution of color compensation for users from 765 schemes.
OPPO Find X3 comes first
Naijatechnews has learned that OPPO Find X3 series will be equipped with OPPO full-link color management system first.
Under the current situation of the hardware-first industry, OPPO’s efforts to develop a color management system also means that it is working hard to open up a new track for mobile phones and enter the era of refined experience from the era of “barbaric” competition with hardware comparison parameters.
In the 5G era, users’ demands for high-quality video and image content are increasing. At the same time, video and social platforms are gradually improving their support for wide-color gamut and high-color-depth video and image content. Therefore, a complete color management system is needed. Meet the needs of content platforms and users.
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