Posts

Color Spaces and Color depth

Image
Color Spaces Color spaces are different types of color modes, used in image processing .  it   is a specific organization of colors.   Some of the common color spaces are: RGB HSV CMY’K Y’UV YIQ Y’CbCr RGB is the most widely used color space especially in computer vision field   so we will explain it in this article . Color model RGB RGB is used in your TV and computer screens, and hence on web pages each color image is actually formed of three different images. Red image, Blue image, and black image. [ R=red -- G=green -- B=blue ] (source) (source) And every color have scale or range from 0 to 255   . So if we have   image like this (only black image) : That’s mean the value of red color in this image is 0 and the value of green color in this image is 0 and the value of green color is also 0 .   rgb = ( 0 , 0 ,0 )   --   so the result was a...

Pixels With Coordinate System and Resolution

Image
Pixels With Coordinate System  and Resolution Any building like house or hospital…etc   consists of several floors and each floor consists of internal units - each unit consists of a total of bricks So brick is the structural unit of any building. The picture is also an expression of a particular building - constructed using its own structural units - these units are called (Pixels) .  What is Pixel? The word “pixel” means a picture element . Pixel is the structural unit of any digital image . They are the smallest unit of information that makes up a picture they are typically arranged in a 2-dimensional grid (array).   group of pixels( source ) This is one pixel in image ( source ) group of pixels ( source ) finally - pixel is consider as   a small image. It have intensity , color and some patterns. ( source ) The Image Coordinate Syst...