Picture Coding With Switchable Dynamic Quantizers

Chung H. Lu; Shing-Sun Yu

doi:10.1117/12.970115

1 November 1989 Picture Coding With Switchable Dynamic Quantizers

Chung H. Lu, Shing-Sun Yu

Proceedings Volume 1199, Visual Communications and Image Processing IV; (1989) https://doi.org/10.1117/12.970115
Event: 1989 Symposium on Visual Communications, Image Processing, and Intelligent Robotics Systems, 1989, Philadelphia, PA, United States

Abstract

This paper presents a picture coding scheme with switchable dynamic quantizers. The image data compression technique is a hybrid of subsampling, pyramid coding, block truncation coding, interpolative coding, dynamic quantization and differential quantization. In addition to the differential quantizer, there are three other quantization modes. According to image activity, each block of the subsampled image can be quantized and coded dynamically in one of four modes. The coding technique can be adapted for progressive transmission of images and can be extended to color images.

Citation Download Citation

Chung H. Lu and Shing-Sun Yu "Picture Coding With Switchable Dynamic Quantizers", Proc. SPIE 1199, Visual Communications and Image Processing IV, (1 November 1989); https://doi.org/10.1117/12.970115

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