Tao-Sheng Ou

Title: Innovations of Tao-Sheng Ou

Introduction

Tao-Sheng Ou is a prominent inventor based in Taipei, Taiwan. He has made significant contributions to the field of rate-distortion optimized systems, particularly in video encoding and processing. With a total of 3 patents to his name, his work has had a substantial impact on the efficiency of data transmission and video quality.

Latest Patents

One of his latest patents is titled "Method for rate-distortion optimized transform and quantization through a closed-form operation." This invention focuses on a rate-distortion optimized (RDO) transform and quantization system. It includes a frame classification unit that categorizes an input frame as either a key frame or a non-key frame. Additionally, a rate model update unit generates model parameters based on transform coefficients and bitrates from encoded key frames. The RDO transform and quantization unit processes the input frame to produce a quantized transform coefficient based on these parameters. A frame buffer is utilized to store previous frames for bitrate estimation.

Another notable patent is the "Rate control method of perceptual-based rate-distortion optimized bit allocation." This method begins by determining whether an input frame is a key frame or a non-key frame. Key frames are encoded to generate rate-distortion (R-D) points, and the R-D model for each basic unit (BU) is updated. This process leads to perceptual-based bit allocation, which generates a target bit rate. A quantization parameter (QP) is then computed according to this target bit rate, and the current BU is encoded based on the QP. If not all BUs have been encoded, a rate-quantization (R-Q) model is updated.

Career Highlights

Tao-Sheng Ou is affiliated with National Taiwan University, where he continues to advance his research and innovations in video processing technologies. His work is recognized for its practical applications in improving video quality and data efficiency.

Collaborations

He has collaborated with notable colleagues, including Homer H Chen and Po-Yen Su, contributing to various projects and research initiatives in the field.

Conclusion

Tao-Sheng Ou's contributions to the field of rate-distortion optimization have established him as a key figure in video processing technology. His innovative patents reflect his commitment to enhancing data transmission and video quality.