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I don't understand what is the x and y variables, what does this pseudo code do? Where is is applied - in which color space? Do I need to convert BGR to LUV,LAB or HSV to work with brightness? Is this code to correction of brightness? These are basic queastions which I have and I cannot start any code until they are clear.

@Balaji R: I don't understand what is the x and y variables, what does this pseudo code do? Where is is applied - in which color space? Do I need to convert BGR to LUV,LAB or HSV to work with brightness? Is this code to correction of brightness? These are basic queastions which I have and I cannot start any code until they are clear.

@Balaji R: I don't understand what is the x and y variables, what does this pseudo code do? Where is is it applied - in which color space? Do I need to convert BGR to LUV,LAB or HSV to work with brightness? Is this code to correction of brightness? These are basic queastions questions which I have and I cannot start any code until they are clear.

@Balaji R: I don't understand what is the x and y variables, what does this pseudo code do? Where is it applied - in which color space? Do I need to convert BGR to LUV,LAB or HSV to work with brightness? Is this code to correction of brightness? These are basic questions which I have and I cannot start any code until they are clear.