SKYWORTH Q71 supports 3D LUT COLOR CORRECTION (*available after a software upgrade), which consists of a 17x17x17 3D LUT cube that can calibrate 4,913 color points. Short for “Look Up Table”, the 3D LUT essentially takes a set of RGB values and returns different RGB values to allow a signal change or adjustment, which can in turn transform the color and tone of an image. 3D LUT effectively fine-tunes color, saturation and brightness with a multidimensional color space mapping method. In the film industry, as there are different types of playback equipment, mapping between different color spaces is often necessary. 3D LUT uses a film production-level color calibration algorithm to complete its key function of color space mapping.
SKYWORTH is one of the first few brands in the industry to ever apply 3D LUT to televisions. To achieve an optimal level of color accuracy, SKYWORTH applied Calman, a widely used calibration software, to autocorrect 3,000 color points and calibrate the gamma and white balance of the screen. It also partnered with the SoC manufacturer to optimize CalMAN’s data conversion matrix algorithm, which enabled the data exported from CalMAN to be accurately applied to SKYWORTH Q71. This unleashes the full potential of the 8K LED screen and pushes the color accuracy of SKYWORTH Q71 to the screen’s limit, delivering a true-to-life onsite view of the photo and video shoots and bringing the creator’s vision to life.
As an industry pioneer in the application of 3D LUT in televisions, particularly 8K ones, SKYWORTH encountered various challenges and achieved success through numerous experimental trials and adaptations.
Prior to the start of the project, SKYWORTH carefully studied and compared each model that supports 3D LUT to ensure that the import would meet expectations later. It also used CalMAN to carry out a 3D LUT autocalibration to optimize its effects, and all the data was recorded.
For SKYWORTH Q71 specifically, SKYWORTH underwent multiple rounds of 3D LUT import logic designs (including user import and user call logics) and functionality verifications, overturning and reconstructing the logic design over and over again until a satisfactory result was obtained. With a more comprehensive logic design, users are able to fully understand the 3D LUT function easily. While SKYWORTH provides the best factory-set LUT data, users can easily import customized data and update the LUT files any time.
In terms of the flow of 3D LUT debugging and inspections, the LUT files were firstly configured and generated by CalMAN. They were then imported to SKYWORTH Q71 for testing. If the color accuracy level is unsatisfactory, a new set of LUT files has to be optimized, configured and generated for another round of testing.
During the debugging process, SKYWORTH also encountered various challenges, for instance write errors of the equipment, incorrect import of LUT files, and software defects. To grapple with these problems, it joined hands with the SoC manufacturer to examine the software’s data conversion errors and improve its data conversion matrix algorithm, so that data exported from CalMAN can be precisely called.
After 3D LUT was imported into SKYWORTH Q71, SKYWORTH carried out a series of data verification. To raise the color accuracy, it applied a range of solutions such as further fine-tuning the screen’s gamma and white balance, and correcting 3,000 color points, followed by a meticulous inspection of more than 100 select color points. In the end, SKYWORTH proudly pushed the color accuracy of SKYWORTH Q71 to the screen’s limit.