Nowadays, Digital Image Compression has become an indispensable part for storage and transmission. Compression is necessary for storing and transmitting image because of limited storage space and low bandwidth capacity. Wireless Image Compression is embedding scheme for reduction of image size so that it require less disk space and faster attachment possible in communication. Research issues in Image Compression are in terms of image quality of decompressed image on higher compression ratio and robustness against visual attacks. In this paper, a hybrid technique using Discrete Wavelet Transform (DWT) and Discrete Cosine Transform (DCT) is proposed. Hybrid DWT and DCT based Compression technique to obtain increased quality of decompressed image as compared to DCT and DWT individually. The proposed technique is based on embedded process in which DCT is embedded in four level DWT. A good Compression ratio is achieved with increase in PSNR, which shows visually improved quality.

Compression Ratio, Discrete Cosine Transform, Discrete Wavelet Transform, Image Compression, Peak Signal to Noise Ratio, Mean Square Error.

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