Lossless intrinsic image decomposition via learning shading feature filtering

Intrinsic image decomposition decomposes an image into reflectance and shading. It has been applied in image editing, augmented reality, and geometry estimation. However, the complete decoupling between reflectance and shading, as well as the consistency of the reconstructed image with the original image, have become the main challenges in the application of intrinsic image decomposition. To improve the performance of the intrinsic image decomposition algorithm for these two challenges, we propose a novel deep learning framework that works separately to learn features unique to different intrinsic images. Based on this framework, we developed more effective loss functions to strengthen the decoupling of reflectance and shading and to maintain the decomposition without losing as much information of the original image as possible. We trained the network on a mixture of synthetic and real datasets and evaluated the results of the experiments on real datasets. The results show that our proposed method not only outperformed existing state-of-the-art methods in qualitative and quantitative comparisons in terms of reflectance but was also competitive in terms of reconstructed consistency and shading. Finally, we implemented several realistic image-editing applications, and the results were visually superior to other results.