ABSTRACT
The goal of human scientific exploration is to advance human capabilities. The history of humanity is measured by the constant increase of human capabilities by the development of technology. The field of computer vision has its own place in the rich collection of stories of human technological development. The basic way of representing images as matrices of pixels as discussed above is often called spatial domain representation since the pixels are viewed as measurements, sampling the light intensities in the space or more precisely on the imaging plane. Histogram representations are much more compact than the original images: For an 8-bit image, the histogram is effectively an array of 256 elements. Image gradients and edges are very rudimentary image feature representations. Edges detected from a natural image are often fragmented since most approaches to edge detection process the pixels by considering only a local neighborhood.
