← Search

Zhangkai Ni

6 accepted papers

2026

When Token Pruning is Worse than Random: Understanding Visual Token Information in VLLMs

CVPR 2026

Vision Large Language Models (VLLMs) incur high computational costs due to their reliance on hundreds of visual tokens to represent images. While token pruning offers a promising solution for accelerating inference, this paper, however, identifies a key observation: in deeper layers (e.g., beyond th

Cited by 0SourcecodeScholar
2024

ColNeRF: Collaboration for Generalizable Sparse Input Neural Radiance Field

AAAI 2024technical

Neural Radiance Fields (NeRF) have demonstrated impressive potential in synthesizing novel views from dense input, however, their effectiveness is challenged when dealing with sparse input. Existing approaches that incorporate additional depth or semantic supervision can alleviate this issue to an e…

2024

DDR: Exploiting Deep Degradation Response as Flexible Image Descriptor

NeurIPS 2024poster

Image deep features extracted by pre-trained networks are known to contain rich and informative representations. In this paper, we present Deep Degradation Response (DDR), a method to quantify changes in image deep features under varying degradation conditions. Specifically, our approach facilitates…

2024

Misalignment-Robust Frequency Distribution Loss for Image Transformation

CVPR 2024poster

This paper aims to address a common challenge in deep learning-based image transformation methods such as image enhancement and super-resolution which heavily rely on precisely aligned paired datasets with pixel-level alignments. However creating precisely aligned paired images presents significant…

2024

Unrolled Decomposed Unpaired Learning for Controllable Low-Light Video Enhancement

ECCV 2024poster

"Obtaining pairs of low/normal-light videos, with motions, is more challenging than still images, which raises technical issues and poses the technical route of unpaired learning as a critical role. This paper makes endeavors in the direction of learning for low-light video enhancement without using…