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Contrast stretch - PowerPoint PPT Presentation

2.3.2 Contrast Stretching

2.3.2 Contrast Stretching. Contrast The contrast of an image is its distribution of light and dark pixels. Fig. 2.12 Low and high contrast histogram. Contrast Stretching. Contrast stretching Clipping thresholding. Contrast Stretching. Contrast Stretching, a = 80, b= 160. Original Image.

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Digital Image Processing

Digital Image Processing. Part 2 Contrast processing. Brightness and Contrast. Grey scale and histogram of pixel values. Dark and Light Images. Low Contrast. To lighten or darken, shift the distribution left or right To increase contrast, stretch the distribution over a wider range.

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Contrast stretch - PowerPoint PPT Presentation

2.3.2 Contrast Stretching

Digital Image Processing