Jaehee Kwak

Title: Jaehee Kwak - Innovator in Video Coding and Decoding Technologies

Introduction

Jaehee Kwak is a notable inventor based in Anyang-si, South Korea. He has made significant contributions to the field of video coding and decoding technologies. With a total of two patents to his name, Kwak's work is recognized for its innovative approaches to image processing.

Latest Patents

Kwak's latest patents include a "Method and apparatus for coding/decoding image." This patent outlines an apparatus for decoding video, which consists of several key components. These include a bitstream decoder that extracts information on the size of a transform unit and generates a quantized frequency transform block from a bitstream. Additionally, it features an inverse quantization unit that reconstructs a frequency transform block by inversely quantizing the quantized frequency transform block. The inverse transformer reconstructs a residual block by inversely transforming the frequency transform block, selecting an inverse transform scheme based on the size of the transform unit. Furthermore, a predictor generates a predicted block in a selected prediction mode, and an adder reconstructs the current block by combining the residual and predicted blocks.

Another patent by Kwak is also titled "Method and apparatus for coding/decoding image." This invention provides an apparatus for encoding video, which includes a prediction unit that generates a predicted block of a current block. A subtraction unit creates a residual block by subtracting the predicted block from the current block. The transformer then transforms the residual block into a frequency transform block using different transform methods for different transform units. A quantization unit quantizes the frequency transform block to produce a quantized frequency transform block, and a bitstream generator encodes this block into a bitstream.

Career Highlights

Jaehee Kwak is currently employed at SK Telecom Company, Ltd., where he continues to develop innovative technologies in video processing. His work has significantly impacted the efficiency and quality of video transmission and decoding.

Collaborations

Kwak collaborates with talented coworkers, including Jeongyeon Lim and Yunglyul Lee, who contribute to the advancement of their projects and innovations.

Conclusion

Jaehee Kwak is a prominent inventor whose work in video coding and decoding technologies has led to significant advancements in the field. His patents reflect a deep understanding of image processing and a commitment to innovation.