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Introduction to Color Spaces Color spaces are the mathematical representation of a set of colors. There are many color models. Some of…

Introduction to Frequency domain In the frequency domain, a digital image is converted from spatial domain to frequency domain. In the frequency…

Portable Cameras vs. Digital Cameras The man who builds first portable camera was Mr. Johann Zahn. In initial days, the size of…

Krisch Compass Mask Kirsch compass mask is used for finding edges. It is almost the same as Robinson compass mask. It also…

Perspective Transformation In general terms, perspective means when human eyes see an object, it looks bigger when it is close to the…

Pixels, Dots, and Lines per Inch Megapixels A digital camera uses pixel elements (also known as a pixel) to capture images. More…

What is Quantization? Quantization is a lossy compression technique which is achieved by compressing a range of values to single quantum. In…

Resolution Gray Level Resolution Gray-level resolution refers to the number of shades of gray which are used in preparing the image for…

Robinson compass mask A Robinson compass mask is a type of mask which is used for edge detection. It has eight orientations.…

Concept of Edge Detection The concept of edge detection is used to detect the location and presence of edges by making changes…