Academic Research

Research Interests

My research primarily lies in image processing, addressing the challenges of image acquisition and display. My research has focused on accurately displaying content on high dynamic range displays, novel methods of image acquisition, perception of images at different scales, and aiding computers in identifying and creating aesthetically desirable images.

  • image processing
  • high dynamic range imaging
  • computational photography
  • image & contrast perception
  • image understanding
  • computational aesthetics

Simply put, I'm interested in how software can help you better take pictures and better show you images you already have. And maybe, just maybe, tell you a bit about how you perceive the world around you in the process.

Projects

Blur-Aware Blur-Aware Image Downsampling
We conduct a user study to determine how the appearance of blur in an image changes when the image is resized. Using the study results, we develop an automatic method for preserving the appearance of the blur present in an image when that image is being resized.

Defocus DR Defocus Dynamic Range Expansion
We determine whether any means of optically blurring the captured image by defocusing the lens, modifying that blurred image with a filter inserted into the optical path, then recovering the desired image by deconvolution can produce a dynamic range reduction with acceptable image quality.

ldr2hdr Ldr2Hdr
We describe a method for boosting the dynamic range of legacy video and photographs for viewing on high dynamic range displays. Our emphasis is on real-time processing of video streams, robustness, and dealing with a wide range of content without user adjusted parameters.

photometric processing Photometric Image Processing for HDR Displays
We present several methods of rendering images to this new class of devices for reproducing photometrically accurate images, and derive a series of methods for efficiently displaying images, optimized for different criteria and evaluate them in a perceptual framework.

hdr displays HDR Display Systems
In this project we developed two alternative designs for HDR display systems. We have built prototypes of both, and discuss both the optical design and software issues such as display calibration and rendering HDR images on both displays.

active lighting Active Lighting
A method for actively controlling the illumination in a room so that it is consistent with a virtual world. In combination with a high dynamic range display, the system produces both uniform and directional illumination at intensity levels covering a wide range of real-world environments.

Thesis

Papers

Tutorials

Patents

Sketches

Posters