arXiv Computer Vision By Elnara Kadyrgali, Muragul Muratbekova, Adilet Yerkin, Nuray Toganas, Ayan Igali, Malika Ziyada, Aruzhan Burambekova, Jamaladdin Hasanov, Pakizar Shamoi

Perceptual Color Difference Modeling Using Machine Learning and Human Similarity Judgments

Read the original on arXiv Computer Vision →

The paper presents a data‑driven method for estimating perceptual color differences by training regression models on human similarity judgments of 2,000 color pairs. Using COLIBRI fuzzy linguistic categories as features, linear regression achieves an R² of 0.595, outperforming RGB and HSI representations. The best result, an R² of 0.703, is obtained with LightGBM on a combined representation, showing that graded perceptual categories improve color‑difference prediction.

Machine-generated by The Flow from the publisher's headline and feed description — not written or checked by a human. The full article lives at arXiv Computer Vision.

arXiv AI
Sep 18

Paint-Anything: Unified Any-Color Control for Image Generation and Editing

Paint-Anything introduces a unified hex-prompt interface that allows users to specify any 24‑bit hex color for both image generation and editing. The method trains on a new Paint‑500K dataset created from real images with object grounding, perceptual color labeling, and editing‑pair synthesis, and supplements this with pure‑color anchors to address shadow‑induced color inaccuracies. Evaluated on the newly proposed Any Color Benchmark (ACBench), Paint‑Anything achieves significant improvements over the base FLUX.2‑4B model, boosting T2I and editing scores by 85.3 % and 28.3 % respectively, and outperforms competing methods on the CompColor metric.

By Ji Xie, Dewei Zhou, Xinyu Huang, Zhennan Chen, Xun Wang
Hugging Face Trending Papers
Sep 8

Canonical Color as a Lens into Concept Decodability in Vision Encoders and VLMs

The paper investigates how vision encoders and Vision‑Language Models (VLMs) encode conceptual information by using canonical color as a test case. By creating a dataset of objects with canonical colors and probing encoders with both color and grayscale images, the authors show that canonical color can still be decoded from grayscale inputs and is linked to predicted object identity. They further demonstrate that post‑training of VLMs can significantly influence color decodability within the vision encoder, suggesting that canonical color is a useful tool for tracing conceptual semantics in these models.