Semantic White Balance: Semantic Color Constancy Using Convolutional Neural Network
This addresses color accuracy in images for computer vision applications, representing an incremental improvement by integrating semantic segmentation.
The paper tackled color constancy by using semantic information from images to estimate illuminant color and gamma correction, resulting in a more than 40% reduction in error.
The goal of computational color constancy is to preserve the perceptive colors of objects under different lighting conditions by removing the effect of color casts caused by the scene's illumination. With the rapid development of deep learning based techniques, significant progress has been made in image semantic segmentation. In this work, we exploit the semantic information together with the color and spatial information of the input image in order to remove color casts. We train a convolutional neural network (CNN) model that learns to estimate the illuminant color and gamma correction parameters based on the semantic information of the given image. Experimental results show that feeding the CNN with the semantic information leads to a significant improvement in the results by reducing the error by more than 40%.