The Effect of White Balance for Color Constancy on Visible Light

Abstract

Plant health conditions can be done by calculating the vegetation index. The vegetation index produced by the camera in visible light is more economical than multi spectral or hyper spectral cameras. Image information from visible light cameras will provide an RGB (Red-Green-Blue) value for each pixel to be used to calculate the vegetation index. The RGB value will be greatly influenced by the light conditions (scene) at the time of image acquisition by the camera. Image of plants, will be influenced by the variability of high illumination conditions due to changes in various natural lighting conditions; bright, cloudy, or illuminating nearby objects. To get the right RGB value from each pixel of the image, it is necessary to make adjustments with a certain white balance method. The development of white balance research is also carried out by looking for the value of color constancy. Because the color of the light source, the inherent qualities of the object, and the color of the object's surface will determine the object's color, Color Constancy is performed.. The information generated by the reflectance of light from the surface of a shiny object (reflective) is better than that of a non-shiny object. In this study, experiments were conducted on the effect of the white balance method on color constancy in visible light. The experimental results on the data set processed by the white balance gray world and white patch methods show that there are different RGB values.