This paper presents a VLSI prototype for the 2*2 Hadamard transform that is applied to the DC coefficients of each image component as described in the MPEG-4 part 2 Advanced Image Coding (AIC).
A VLSI prototype for the quantization process that is accompanied with the transform operation is given as well. It mainly deals about reducing the loss of clarity of the image when it is compressed. This is achieved by using hadamard transform. This transform is computed using add operations only. Thus the computational requirements of the design are reduced. Using the appropriate transforms and coding technique we can actually reduce the clarity loss of an image at each stage of either transforms or coding techniques. This is because at each stage we compare the actual and the predicted value. Thus the residual value is just taken which is loss free or with minimal loss.
Thus VLSI implementation of degraded images using AIC improves the features of the image to a very large extent. This sort of implementation using AIC can be used in variety of applications such as HD and digital photo applications.