Image editing and post-processing techniques have matured over the years, making it difficult (verging on impossible) to assess whether an image has been digitally enhanced or doctored somehow. However, complex manipulations still rely on skilled user input, painstakingly painting over pixels.

   We present our recent and on-going work on advanced image editing techniques, extending current tools by leveraging the limitations of the human visual system and the wealth of information available in a high dynamic range image. Working in perceptual space, psychophysics play an important role in assessing the validity of the results.

Examples include simulating complex light transport such as participating media or caustics, appearance capture of subsurface scattering or relighting of images.

  Diego Gutiérrez is a tenured Associate Professor at the University of Zaragoza, Spain, where he got his PhD in the field of computer graphics. His areas of interest include computational photography, rendering and human perception. He has over 50 papers published in journals and international conferences on this topics, and has served on numerous program committees, including SIGGRAPH and Eurographics.