Abstract: An apparatus for edge enhancement of a digital image provided as raw digital image data to an input terminal and for providing processed image data to an output terminal. An offset processing circuit is coupled to the input terminal and configured to receive the raw data and generate offset data. An interpolation circuit is coupled to the offset processing circuit and configured to receive the offset data and to provide interpolated data. A color processing circuit is coupled to the interpolation circuit and configured to process the interpolated data to generate color data. An edge enhancement circuit is coupled to the interpolation circuit and the color processing circuit and configured to enhance the edges of the image based on the interpolated data and the color data to generate enhanced data. A lookup table is coupled to the color processing circuit and the edge enhancement circuit and configured to lookup the color data and the enhanced data to generate lookup data.

Abstract: An image compression apparatus for compressing image data provided to an input terminal and providing compressed data to an output terminal includes a 4×4 weighted digital cosine transformer (DCT) coupled to the input terminal and configured to convert the image data into weighted frequency data. A zigzag circuit is coupled to the DCT and configured to zigzag process the frequency data and generate create zigzag data. A Q-factor estimator is coupled to the DCT and configured to estimate the frequency data and generate a Q-factor. A DC coding circuit is coupled to the zigzag circuit and configured to code the zigzag data and generate a DC code. A quantization circuit is coupled to the zigzag circuit and the Q-factor estimator and configured to quantize the zigzag data based on the Q-factor and generate quantized data.