Image Transition

Abstract

In slideshow applications or video editors that are transition animations that reveal the next slide or image in various visual styles which may include fading in and out between the two images. The focus of this chapter is the transition from one image to another over time as can be seen in Fig. 9.2. Transition animations are applied over a period of time to both images and each pixel to be displayed is altered slightly each instance depending on a function of time. For animating a linear transition between images where one image turns into a different image, we use the following formula where each pixel value is determined by a transition time point t whose range is between 0 and 1:The variables are defined as: r is the resultant pixel value, a is pixel from image A, b is a pixel from image B, and t is the transition variable. This transition function is linear as in time variable t linearly controls the amount of reveal of image B over A.