VLSI implementation of real-time image rotation

A VLSI implementation of real-time image rotation is presented. The implementation satisfies real-time constraints and also introduces very few distortions in the rotated image. The VLSI design is based on a skewed raster scan of the original image. It uses only integer additions instead of floating point multiplications and incorporates a programmable logic array which contains trigonometric function values with precision of upto 1/spl deg/ in the rotation angle. This results in improved real-time performance compared to existing hardware designs. The design is shown to accommodate large images without sacrificing real-time performance with existing VLSI technology.