Title :
An adaptive color transform approach and its application in 4∶4∶4 video coding
Author :
Marpe, Detlev ; Kirchhoffer, Heiner ; George, Valeri ; Kauff, Peter ; Wiegand, Thomas
Author_Institution :
Image Process. Dept., Fraunhofer Inst. for Telecommun.-Heinrich Hertz Inst., Berlin, Germany
Abstract :
We propose to extend block-based video-coding by an adaptive color space transform. The presented technique enables an encoder to switch between several given color space representations with the objective to maximize the overall rate-distortion gain. Simulations based on the current draft of the H.264/MPEG4-AVC 4:4:4 extensions demonstrate that our technique provides a rate-distortion performance equal or better than that obtained when using any of the individual color spaces only.
Keywords :
block codes; image colour analysis; image representation; rate distortion theory; transforms; video coding; 4:4:4 video coding; adaptive color space transform; adaptive color transform approach; color space representations; rate-distortion gain; Color; Encoding; Image color analysis; PSNR; Transform coding; Transforms; Video coding;
Conference_Titel :
Signal Processing Conference, 2006 14th European
Conference_Location :
Florence
