Essay On Image Compression

2160 Words9 Pages

FPGA IMPLEMENTATION OF RDCT
Abstract: Due to the increasing requirements for transmission of images in computer, mobile environments, the research in the field of image compression has increased significantly. Image compression plays a crucial role in digital image processing, it is also very important for efficient transmission and storage of images. When we compute the number of bits per image resulting from typical sampling rates and quantization methods, we find that image compression is needed. As a rule, a video signal has high temporal redundancies due to the high correlation between successive frames. This redundancy has not been deflated enough by current video compression techniques. This paper presents the performance of different block based discrete cosine transform (DCT) algorithms for compressing image. This compressing converts the spatial and temporal correlation of the video signal into a high spatial correlation. Indeed, this technique transforms each group of pictures into one picture eventually with high spatial correlation. RDCT exploits the transformed images with less execution time and adders.
Keywords: Discrete Cosine …show more content…

Image compressions have many applications and play an important role in efficient transmission and storage of images. The image compression aims at reducing redundancy in image data to store or transmit only a minimal number of samples. Discrete Cosine Transforms relating to the spectral analysis and spectral decomposition of image and speech signals are widely utilized in numerous applications. To reduce computational complexity, fast and simple implementation of the DCT and inverse DCT has become increasingly important. For high end electronics, for example, the high definition television encoder, fast algorithms that use a parallel structure may be required. For low cost consumer products, a simple kernel that completes the computation may be

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