快速Internet小波图像传输

对发展中国家的经济发展来说,当贸易因自由化而可能致使国家总体利益遭受损失时,对自由进行限制的修正自由规则是所取对应措施中最常见的做法,诸如补助金制度、投资限制政策、环境政策、竞争政策等.应该看到这些强有力的限制手段在束缚自由贸易而保护了自身利益的同时,却有悖于通过世界贸易的扩大可以增进宏观福利.在WTO这一多边贸易组织一时还难以协调发展中国家的国家利益与发达国家的自由贸易利益时,区域联合不失是对发展世界贸易的一种补充.

Fast Image Transmission over Internet

Images are usually transmitted across the Internet using a lossless protocol such as TCP/IP. Lossless protocols require retransmission of lost packe ts; which substantially increase transmission time .We introduce a fast lossy In ternet image transmission scheme (FLIIT) for compressed images which eliminates retransmission delays by strategically shielding important portions of the image with redundancy bits. This paper describes a joint source and channel coding al gorithm efficiently allocates quantizer resolution bits and redundancy bits to c ontrol quantization errors and expected packet transmission losses. It also desc ribes an implementation of this algorithm and compare its performance on the Int ernet to lossless TCT/IP transmission of the same images. In the experiments the FLIIT scheme transmitted images five times faster than TCP/IP during the day wi th resulting images of equivalent quality.