Introduction to Video and Image Processing

Mathematical Definitions (Introduction to Video and Image Processing) Part 2

Applying Linear Algebra Say you want to find the equation of a straight lineYou know that the line passes through the pointso we haveObviously this is not enough information to find α and β, or in other words we have one equation and two unknowns α and β. So in order to solve the problem […]

Learning Parameters in Video and Image Processing Systems (Introduction to Video and Image Processing)

Virtually all video and image processing systems require a number of parameters to be defined. For example a threshold value to convert a gray-scale image into a binary image, the size of a filter kernel, the minimum and maximum allowed values of a feature, etc. Defining suitable values for these parameters is a crucial task […]

Conversion Between RGB and HSI (Introduction to Video and Image Processing) Part 1

In this topic the conversions from the RGB color representation to the HSI color representation, and reverse, are derived. That is, we seek a conversion from [R, G, B] to [H, S, I], and one from [H, S, I] to [R, G, B]. When deriving the conversions we use a particular point, denotedThe rgb version […]

Conversion Between RGB and HSI (Introduction to Video and Image Processing) Part 2

Conversion from HSI to RGB The conversion from HSI to RGB depends on in which of the following triangles the point is located: WR’G’, WG’B’, or WB’R’. Let us start with the situation where the triangle WR’G’. We first convert from HSI to rgb and then from rgb to RGB. In the triangle WR’G’ we […]

Conversion Between RGB and HSV (Introduction to Video and Image Processing)

In this topic the conversions from the RGB color representation to the HSV color representation, and reverse, are derived. That is, we seek a conversion from [R, G, B] to [H, S, V], and one from [H, S, V] to [R, G, B]. Conversion from RGB to HSV We recall from Sect. 3.3.2 that HSV […]

Conversion Between RGB and YUV/YCbCr (Introduction to Video and Image Processing)

In this topic the conversions from the RGB color space to the YUV/YCbCr (and similar) color spaces, and reverse, are derived. That is, we seek a conversion from [R, G, B] to [Y, X1,X2], and one from [Y, X1,X2] to [R, G, B]. In Sect. 3.3.3 it was stated that the luminance, Y, contains intensity […]

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