Howard Zhang

I am a 3rd year PhD student at UCLA where I am advised by Prof. Achuta Kadambi. My research interests include computer vision and computational imaging, particularly in the blending of physics and AI.

I attended UC Berkeley for my undergrad where I was fortunate to work with Professor Kristofer Pister on robotics and AI.

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Research

Representative/Recent papers are highlighted

Enhancing Diffusion Models with 3D Perspective Geometry Constraints
Rishi Upadhyay, Howard Zhang, Yunhao Ba, Ethan Yang, Blake Gella, Sicheng Jiang, Alex Wong, Achuta Kadambi
SIGGRAPH Asia, 2023
PDF

We propose a loss function for latent diffusion models that improves the perspective accuracy of generated images, allowing us to create synthetic data that helps improve SOTA monocular depth estimation models.

WeatherStream: Light Transport Automation of Single Image Deweathering
Howard Zhang, Yunhao Ba, Ethan Yang, Varan Mehra, Blake Gella, Akira Suzuki, Arnold Pfahnl, Chethan Chinder Chandrappa, Alex Wong, Achuta Kadambi
CVPR, 2023
PDF

We introduce a pipeline that uses the power of light-transport physics to collect a large dataset of paired clear and weathered frames to train a SOTA model on weather removal.

Depth Estimation from Camera Image and mmWave Radar Point Cloud
Akash Deep Singh, Yunhao Ba, Ankur Sarker, Howard Zhang, Achuta Kadambi, Stefano Soatto, Mani Srivastava Alex Wong
CVPR, 2023
PDF

We present a method for inferring dense depth from a camera image and a sparse noisy radar point cloud.

Not Just Streaks: Towards Ground Truth for Single Image Deraining
Yunhao Ba, Howard Zhang, Ethan Yang, Akira Suzuki, Arnold Pfahnl, Chethan Chinder Chandrappa, Celso de Melo, Suya You, Stefano Soatto, Alex Wong, Achuta Kadambi
ECCV, 2022
Paper

We propose a large-scale dataset of real-world rainy and clean image pairs and a method to remove degradations, induced by rain streaks and rain accumulation, from the image.


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