Shinji Shishido

Title: Innovations of Shinji Shishido

Introduction

Shinji Shishido is a prominent inventor based in Nakai-machi, Japan. He has made significant contributions to the field of image coding technology, holding a total of 7 patents. His work focuses on improving the efficiency and quality of image encoding processes.

Latest Patents

Shishido's latest patents include an "Image coding apparatus and image coding method." This invention features an approximating element that utilizes multiple prediction techniques to approximate the value of a target pixel based on surrounding pixel values. It also includes a holding element that retains information about the ranks of these prediction techniques, which are determined during the processing of preceding pixels. The determining element computes errors between approximate values and the target pixel, selecting the most suitable prediction technique based on these errors and rank information. Additionally, a coding element encodes the target pixel's value using the selected technique.

Another notable patent is the "Image encoding apparatus and quantization characteristics determining apparatus." This invention aims to encode images efficiently while minimizing block distortion and pseudo-contour generation. It features a quantization characteristics determining unit that measures the length of consecutive identical pixel values and pixel value differences. This unit determines quantization characteristics based on sensory evaluation results. The quantization/inverse quantization unit then quantizes and reduces the number of gray-scale levels, with the output being encoded by an entropy encoding unit.

Career Highlights

Shinji Shishido has dedicated his career to advancing image coding technologies. His innovative approaches have led to significant improvements in how images are processed and encoded, making them more efficient and effective.

Collaborations

Throughout his career, Shishido has collaborated with notable colleagues, including Yutaka Koshi and Akihiro Andoh. These partnerships have contributed to the development of his groundbreaking inventions.

Conclusion

Shinji Shishido's contributions to image coding technology have established him as a key figure in the field. His innovative patents reflect his commitment to enhancing image processing techniques, making a lasting impact on the industry.