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Non-numeric Data Representation

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Presentation on theme: "Non-numeric Data Representation"— Presentation transcript:

1 Non-numeric Data Representation
Image Data: An image with a 512*256 resolution is a grid with 512 columns and 256 rows Divide the screen into a grid of cells each referred to as a pixel Pixel values and sizes depend on the type of the image Black & white images: Either 0 (black) or 1 (white) Grayscale images: An integer between 0 (black) and 255 (white) Anything in between is gray (higher/lower values are closer to white/black) Color images (RGB): Three values per pixel Red, Green, Blue each as a value between 0 and 255 where 0 is BLACK and 255 is either R, G or B Explore colors: For any image, we only store the pixel values

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3 Explore colors: http://web. stanford

4 An Image File //RGB COLORED IMAGE

5 Non-numeric Data Representation
Digital movies are built from a number of images (or frames) that are displayed in a certain sequence at high speeds 30 images per second


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