Intelligent Imaging Lab

School of Electrical and Computer Engineering, and Department of Statistics at Purdue University

Welcome

Welcome to Purdue Intelligent Imaging Lab (i2Lab). Follow us at

Mission

In i2lab, our mission is to build intelligent cameras by co-designing sensors and algorithms to enable seeing in all imaging conditions.

Research

photon-limited imaging
imaging through turbulence
Astronomical imaging (coming soon)
Cognitive sensing (coming soon)

Seminar / Tutorials

Research News

2023-01 New paper ‘‘On the Insensitivity of Bit Density to Read Noise in One-bit Quanta Image Sensors’’, IEEE Sensors Journal.
2023-12 New paper ‘‘Real-Time Dense Field Phase-to-Space Simulation of Imaging through Atmospheric Turbulence’’, IEEE Trans. Comp. Imaging.
2022-11 New paper ‘‘Graph-Based Depth Denoising and Dequantization for Point Cloud Enhancement’’, IEEE Trans. Image Process.
2022-10 New paper ‘‘Photon-Limited Non-Blind Deblurring Using Algorithm Unrolling’’, IEEE Trans. Comp. Imaging.
2022-09 New paper ‘‘What Does a One-Bit Quanta Image Sensor Offer?’’ IEEE Trans. Comp. Imaging.
2022-08 New paper ‘‘Tilt-then-Blur or Blur-then-Tilt? Clarifying the Atmospheric Turbulence Model’’ IEEE Signal Processing Letters.
2022-07 New paper ‘‘Exposure-Referred Signal-to-Noise Ratio for Digital Image Sensors’’ IEEE Trans. Comp. Imaging.
2022-06 Prof Chan and Nick Chimitt gave tutorial at CVPR 2022 Imaging through Atmospheric Turbulence.
2022-05 New paper ‘‘Review of Quanta Image Sensors for Ultralow-Light Imaging’’ IEEE Journal Electron Devices
2022-01 New paper ‘‘Graph Signal Restoration Using Nested Deep Algorithm Unrolling’’ IEEE Trans. Signal Processing.
2021-11 New paper ‘‘Graph-Based Depth Denoising and Dequantization for Point Cloud Enhancement’’ arXiv.
2021-11 We are selected to participate in IARPA Biometric Recognition and Identification at Altitude and Range.
2021-10 New paper ‘‘Photon Limited Non-Blind Deblurring Using Algorithm Unrolling’’, arXiv.
2021-08 New paper ‘‘Photon-Limited Object Detection using Non-local Feature Matching and Knowledge Distillation’’, IEEE Intl. Conf. Computer Vision Workshop (ICCV-w), 2021.
2021-08 New paper ‘‘Detecting and Segmenting Adversarial Graphics Patterns from Images’’, IEEE Intl. Conf. Computer Vision Workshop (ICCV-w), 2021.
2021-08 New paper ‘‘Optical Adversarial Attack’’, IEEE Intl. Conf. on Computer Vision Workshop (ICCV-w), 2021.
2021-07 New paper ‘‘Accelerating Atmospheric Turbulence Simulation via Learned Phase-to-Space Transform’’, IEEE International Conference on Computer Vision (ICCV), 2021.
2021-06 Prof Chan gave an invited talk at CVPR 2021 on Imaging through Atmospheric Turbulence.
2021-03 New paper ‘‘Student-Teacher Learning from Clean Inputs to Noisy Inputs’’ IEEE Conference on Computer Vision and Pattern Recognition (CVPR), 2021.
2021-01 New paper ‘‘Low-light demosaicking and denoising for small pixels using learned frequency selection, IEEE Transactions on Computational Imginag.
2020-11 New paper ‘‘HDR Imaging with Quanta Image Sensors: Theoretical Limits and Optimal Reconstruction’’ IEEE Transactions on Computational Imaging, 2020.
2020-08 Our project on turbulence receives a regular grant from NSF ECCS core.
2020-07 New paper ‘‘Dynamic low-light imaging with Quanta Image Sensors’’ European Conference on Computer Vision (ECCV), 2020.
2020-07 New paper ‘‘Image classification in the dark using Quanta Image Sensors’’ European Conference on Computer Vision (ECCV), 2020.
2020-07 New paper ‘‘Simulating anisoplanatic turbulence by sampling inter-modal and spatially correlated Zernike coefficients’’ Optical Engineering, 2020.
2020-06 New paper ‘‘One size fits all: Can we train one denoiser for all noise levels?’’ International Conference on Machine Learning (ICML), 2020.
2020-05 New paper ‘‘Simulating anisoplanatic turbulence by sampling correlated Zernike coefficients IEEE Intl. Conf. Computational Photography (ICCP), 2020.
2020-04 New research grant from the Army Research Office for funding our project on adversarial robustness in real environment.

News of i2Lab Faculty

2022-12 Prof Chan won the IEEE Signal Processing Society Best Paper Award for Plug-and-Play ADMM published in IEEE Trans. Comp. Imaging in 2017.
2022-05 Prof Chan is recognized as an outstanding reviewer for CVPR 2022.
2021-08 Prof Chan is recognized by the IEEE Signal Processing Society as an Outstanding Associate Editor for the IEEE Transactions on Computational Imaging.
2021-08 Prof Chan is recognized as an Outstanding engineering teacher.
2021-05 Prof Chan is promoted to Elmore Associate Professor of Electrical and Computer Engineering.
2020-04 Prof Chan is promoted to Associate Professor with tenure.
2019-06 Prof Chan receives Ruth and Joel Spira Outstanding Teaching Award 2019.
2019-03 Prof Chan receives Purdue College of Engineering Early Career Teaching Award 2019.
2019-01 Prof Chan is appointed as Associate Editor for IEEE Transactions on Computational Imaging.
2018-04 Prof Chan is selected as a Purdue Teaching for Tomorrow Fellow 2018.
2018-04 Prof Chan receives HKN Outstanding Professor Award 2018.
2017-03 Prof Chan is elevated to IEEE senior member.
2016-11 Prof Chan receives Purdue College of Engineering Outstanding Graduate Mentor Award.
2016-09 Prof Chan and PhD student Omar Elgendy wins Best Paper Award in IEEE ICIP 2016.
2016-09 Prof Chan is appointed as an Associate Editor for Optics Express.
2016-09 Prof Chan and undergraduate students appear in IEEE Signal Processing Magazine for SP Cup 2016.
2016-05 Prof Chan co-organizes a special session on Integration of Imaging Systems and Computational Algorithms in ICIP 2016.
2016-03 Prof Chan and undergraduate students win IEEE Signal Processing Cup 2016 Second Prize.
2015-11 Prof Chan receives HKN Outstanding Teacher Award 2015.
2015-09 Prof Chan is elected to IEEE Signal Processing Society Special Interest Group on Computational Imaging.

News of i2Lab Members

2022-04 Abhiram Gnanasambandam pass his Ph.D. defense. Congratulations Dr. Abhiram!
2022-03 Abhiram Gnanasambandam received Outstanding Graduate Researcher Award 2022.
2021-10 Chengxi Li passed her Ph.D. defense. Congratulations Dr. Li!
2020-04 Guanzhe Hong received Magoon Excellence TA Award 2020.
2019-07 Xiran Wang passed his Ph.D. defense. Congratulations Dr. Wang!
2019-05 Omar Elgendy passed his Ph.D. defense. Congratulations Dr. Elgendy!
2018-05 Joon Hee Choi passed his Ph.D. defense. Congratulations Dr. Choi!
2018-01 Omar Elgendy received the Purdue Bilsland Dissertation Fellowship.

Education News

2022-04 Summer course on Machine Learning for Beginners. Registration open!
2022-01 New course ECE495 Cameras, Images, Inverse Problems
2021-06 Summer course on Machine Learning for Beginners.
2020-11 New book on Introduction to Probability for Data Science.
2020-08 ECE302 Undergraduate Probability Fall 2020. See course Lectures and Videos.
2021-01 ECE595 Machine Learning I Spring 2021. See course Lectures and Videos.

Media Coverage

2021-08 Optical adversarial attack can change the meaning of road signs (unite.ai).
2020-11 New HDR imaging capability using single-photon image sensors (Purdue ECE News).
2020-07 New breakthroughs in computer vision for imaging in the dark (Purdue ECE News).
2020-07 Resolving fast movement in low light (Image Sensor World Blog).
2020-06 Training one deep neural network for all noise levels (Purdue ECE News).
2020-05 ECE researcher to study adversarial attack in real environment (Purdue ECE News).