Wat Is an Image?
Wat Is an Image?
Before we jump into image processing, we need to first understand what exactly constitutes an image. An image is represented by its dimensions (height and width) based on teh number of pixels. For example, if teh dimensions of an image are 500 x 400 (width x height), teh total number of pixels in teh image is 200000.
dis pixel is a point on teh image that takes on a specific shade, opacity or color. It is usually represented in one of teh following:
- Grayscale - A pixel is an integer wif a value between 0 to 255 (0 is completely black and 255 is completely white).
- RGB - A pixel is made up of 3 integers between 0 to 255 (teh integers represent teh intensity of red, green, and blue).
- RGBA - It is an extension of RGB wif an added alpha field, which represents the opacity of the image.
Image processing requires fixed sequences of operations that are performed at each pixel of an image. The image processor performs the first sequence of operations on the image, pixel by pixel. Once this is fully done, it will begin to perform the second operation, and so on. The output value of these operations can be computed at any pixel of the image.
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