Objectives To detect characters using the template matching technique Results and Discussion One of the techniques used for character recognition is template matching. Template matching uses a ‘template’ that will serve as a target for character detection and looks for identical ‘template’ images in a larger image. To implement this technique, a text image […]Read more "CHARACTER RECOGNITION USING TEMPLATE MATCHING"
Objectives To detect image edges using Prewitt and Sobel filter masks To segment images using color segmentation algorithms Results and Discussion Filter masks are used to detect edges of images by finding areas where abrupt changes or gradients in intensity value are located. Two of the most commonly used filters for pixel-by-pixel edge detection are […]Read more "EDGE DETECTION AND COLOR SEGMENTATION"
Objectives To enhance old color photographs using color balancing techniques To improve image restoration using histogram manipulation on the images Results and Discussion White balance, also called color balance, is an important technique in restoring old color photographs as it adjusts the intensities of the colors in the image such that the colors look more […]Read more "RESTORATION OF OLD COLOR PHOTOGRAPHS"
Objectives To demonstrate the anamorphic property and rotation property of the two-dimensional Fourier transform To perform convolution of binary images with arbitrary patterns To implement ridge enhancement and line removal using filters Results and Discussion Fourier transform (FT) gives the spatial frequency distribution of a signal. In two-dimensions, FT exhibits distinct properties such as anamorphism […]Read more "PROPERTIES AND APPLICATIONS OF 2D FOURIER TRANSFORM"
Objectives To implement discrete Fourier transform in computational application To demonstrate Fast Fourier Transform algorithm in different synthetic binary images To perform convolution of a binary image with apertures of varying size Results and Discussion Fourier transform is a linear transform that brings a function in one domain to the […]Read more "DISCRETE FOURIER TRANSFORM"
Objectives To perform area calculation in images of varying resolutions using Green’s Theorem To determine the accuracy of Green’s Theorem as a method of area estimation in images To estimate the lot area of a place of interest using Green’s Theorem Results and Discussion Green’s theorem is one of the methods used to measure […]Read more "Area Estimation in Images using Green’s Theorem"
Intensity transformations are techniques used to process images by manipulating its pixel values or gray-level values. In the first part of the activity, the left image at figure 1 was used the test image for six intensity transformations using intrasform.m file. From RGB color, it was first converted to grayscale color using code 1, and […]Read more "Intensity Transformations and Histogram Equalization"