AI73 2.3 Gaussian Filter In this class, we will learn about Gaussian Filter. ● Gaussian Filter A Gaussian kernel gives less weight to pixels further from the center of the window. This 3 x 3 kernel is an approximation of a 2D Gaussian function. ● Difference between Gaussian filter and Box Filtering Box Filtering makes the image smaller. ● Shadow Effect We can create shadow effect by overlaying Gaussiann blur image and o.. 2020. 8. 3. 2.2 Box Filter In this class, we will learn about Box Filter. ● Box Filter The Box Filter replaces pixel with local average has a smoothing effect. Each filter is processed through the whole image pixels. The filter is applied to the blue 3x3 part of the image, summed up, and be the value of the rightmost array. The processing is continued until the end of the image. The result of the filter would be blurred i.. 2020. 8. 3. 2.1 Point Processing This class, we will look Point Processing in detail. As we learned in last class, two kinds of image filtering are possible, Point Operation and Neighborhood Operation. As you can see in the pictures above, each image processing technique can be possible by using different function. As you have seen in many Photoshop application, many point-processes would also be possible. Next class, we will l.. 2020. 8. 3. 2.0 Image Filtering In this class, we will learn about 'Image 'Filtering'. ● Image What is an image? An image is an array of numbers. Color images is made up of 3 colors, Red, Green, Blue. And actual intensity values per pixel is 0-255. ● 2D function It is helpful to think of an image as a 2D function. So, what is the range of f(x)? For example, 8-bit image would have 256 values. What kind of image transformations .. 2020. 8. 3. 이전 1 2 3 4 5 6 ··· 19 다음
