Abstract
This chapter overviews the digital signal processing and its impact on the present business realm. Digital signal processing (DSP) refers to the manipulation of real-world signals within a digital computer. As and when these signals are converted into digital form, it can be manipulated by using several mathematical techniques to enhance, change, or display the data in a particular way. While discussing about DSP, it is always noteworthy to distinguish between real-time and non-real-time DSP. The chapter emphasizes on the advantage of treating images in the digital domain. It affords to filter, manipulate, and distort the image. The point operation filter has a cousin in the analog world. Besides these, window operations are more complicated that involve the computation of individual pixel values usually based upon the values of pixels in the neighborhood. The chapter explains that convolution creates an embossed effect from a graphic image. It creates a dramatic effect when used on a photographic image.
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