Wavelet Transform Based Image Compression
نویسنده
چکیده
Image require substantial storage and transmission resources, thus image compression is advantages to reduce these requirements. A good strategy of image compression should assure a good compromise between a high compression rate and a low distortion of the picture. In this paper a lossless digital image compression technique based on Integer Wavelet Transform is proposed. The small deviations in data values are not allowed in certain images for obvious reasons and a potential risk of a person misinterpreting an image. A preprocessing and post processing histogram adjustment is used to prevent overflow/underflow. In proposed technique wavelet transform is applied to entire image, so it produces no blocking artifacts. The results show improved high performances in terms of compression ratio and reconstruction quality.
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