Digital ImagesBasics2011

# Digital ImagesBasics2011 - A Brief Introduction DIGITAL...

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2011-1-20 Math Modeling 1, Spring 2011 (Xin Li) 1 A Brief Introduction DIGITAL IMAGES DIGITAL IMAGE REPRESENTATION ´ Pixel = Pic ture El ement ´ Pixel Coordinates column 2 1 4 3 2 1 row 3

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2011-1-20 Math Modeling 1, Spring 2011 (Xin Li) 2 LETTER “A” BITMAP ´ SQUARE ´ CIRCLE PIXEL REPRESENTATIONS ´ Grid ´ Point ´ Rectangle (1,1) (2,1) (1,2) (2,1) (1,3)(1,4) (1,1) (2,1) (1,2) (2,1) (1,3)(1,4)
2011-1-20 Math Modeling 1, Spring 2011 (Xin Li) 3 MATRIX INDICES ´ Row ´ Column column (1,1) (1,2) (1,3) … (2,1) (2,2) (2,3) … ﹙﹚ row PIXEL INTENSITY ´ Binary image: pixel value = 0 or 1 ´ Gray image: 256 values or else ´ Color image: vector valued ´ Bitmap and bitmap image: « The term bitmap refers to how a given pattern of bits in a pixel maps to a specific color bits in a pixel maps to a specific color. « Bitmap images is how graphics is stored in the video memory of a computer.

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2011-1-20 Math Modeling 1, Spring 2011 (Xin Li) 4 OUR IMAGE MODEL ´ A bitmap images take the form of an array, where the value of each pixel correspond to the color of that portion of the image.
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Digital ImagesBasics2011 - A Brief Introduction DIGITAL...

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