用画圈工具替代点选，让图像着色更精准高效
Enabling Region-Specific Control via Lassos in Point-Based Colorization
- 引入画圈工具限定颜色范围，解决颜色混杂问题
- 一个画圈操作效果相当于4.18个点提示，提速30%
- 适合需要精细控制颜色区域的图像编辑用户
基于点的交互式着色技术允许用户通过提供颜色提示轻松为灰度图像上色。然而，当语义相似区域被赋予不同颜色时，该方法常出现颜色混杂，导致结果不理想——我们称之为颜色坍缩。其根本原因在于点无法有效定义各颜色的边界。为此，本文引入画圈工具以控制每个颜色提示的作用范围，并设计框架利用用户提供的画圈信息生成局部注意力掩码。实验表明，仅使用一个画圈操作即可达到4.18个独立点提示的效果，且所需时间比纯点选方式减少30%。
原文摘要 · Abstract (English)
Point-based interactive colorization techniques allow users to effortlessly colorize grayscale images using user-provided color hints. However, point-based methods often face challenges when different colors are given to semantically similar areas, leading to color intermingling and unsatisfactory results-an issue we refer to as color collapse. The fundamental cause of color collapse is the inadequacy of points for defining the boundaries for each color. To mitigate color collapse, we introduce a lasso tool that can control the scope of each color hint. Additionally, we design a framework that leverages the user-provided lassos to localize the attention masks. The experimental results show that using a single lasso is as effective as applying 4.18 individual color hints and can achieve the desired outcomes in 30% less time than using points alone.
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