抠图

全局Poisson抠图的实现与改进

Realization and Improvement of Global Poisson Matting

通过对Normalizedcut方法的研究，发现闭合形式的图像抠图技术可以得到非常好的边缘细节。

By analysis of Normalized Cut , we found that a closed-form solution to natural image matting can get very good foreground .

浅议Photoshop中的抠图方法

Discuss methods of cutout computer graphics in Photoshop

Photoshop抠图攻略与创意图像合成应用研究

The Research of Photoshop in Digging Images Strategy Guide and Synthesizing Application for Creative Images

Photoshop中常用的抠图方法和技巧

Photoshop Commonly Used Methods and Techniques Cutout

Photoshop的抠图技巧分析

Analysis of Techniques for Photoshop Cutout

然后在Poisson抠图技术的基础上，提出了基于区域生长的Poisson抠图方法，实现了自然图像的抠图。

A Region Growing Based Poisson matting is proposed based on Poisson matting , and natural image matting is realized using this method .

自然图像抠图技术主要通过操作者手工标定前景区域、背景区域和未知区域，然后采用统计学的方法、构造偏微分方程或其他方法求解未知区域的alpha值。

In natural image matting , researcher can get alpha value through statistic , resolving differential matting equation and other methods , after the researcher drawing the foreground and background contours .

借鉴清晰图像研究中的懒惰抠图（LazySnapping）技术，该方法主要由两步组成：粗糙定位以及模糊区域求精。

Inspired by the lazy snapping technique in the clear image matting research , the method mainly consists of two steps : rough positioning and fine extraction .

第三，根据抠图公式，编程实现经典TV模型和TV-L1模型的图像抠图，并给出实验结果。

Thirdly , according to the matting formula , programming the Classic TV model and TV-L1 model image matting , and gives experimental results .

在抠图算法方面，通过对花朵数字图像的特点及系统应用背景的分析，系统主要采用已有的Grabcut算法，并针对其处理后存在的问题，对算法加入了有效的改进和完善。

In the aspect of matting algorithms , the system applies the pre-existing Grab Cut according to characteristics of flower images in natural background and application background , and improves it effectively aimed at the problems in the algorithm .

通过结合人类视觉系统理论与区域生长思想可取得对彩色图像更好的分割效果，将这种方法用到Poisson抠图技术中可明显降低处理时间，并且处理效果也得到提高。

Combine the Human Vision System theory with Region Growing , color images is segmented more efficient . Using the method to Poisson matting , less processing time and better processing result is gained .

我们设计了一个新的精细抠图界面（PaintMatting），使用户对于高分辨率的图像能够轻松而快速地完成从二元分割到图像编辑操作（如背景替换、色调调整）的衔接工作。

We design a new user interface for image matting ( Paint Matting ), enabling the user to conveniently and quickly make the transition from binary segmentation to detailed image editing ( cut-and-paste , color adjustments , etc. ) .

抠图（matting）是图像和视频处理的一项重要的技术，在医疗诊断、电影特效和家庭娱乐中，获得了广泛的应用。

Matting is an important operation in image and video processing . With the development of digital technology , matting is widely applied to medical diagnosis , special visual effects and home entertainment .

前背景分离（matting）也称抠图，即将图像或视频的某一感兴趣的部分从原始图像或视频中分离出来，主要功能是为了将分离出的前景物体与新的背景图像进行完美地合成。

Matting is the technique of extracting some interesting part out of the original image or video , whose main functionality is to composite the extracted foreground object into images with new backgrounds perfectly .

第二，以最速降线问题和Tikhonov模型为例，介绍了变分法和偏微分方程，为文章抠图算法的研究提供了理论基础。

Secondly , show a comprehensive concepts of the variational method and the of partial differential equations ( PDEs ) . And take the most brachistochrone problem and Tikhonov model as examples , derivate the partial differential equations ( PDEs ), those provide theoretical foundation of matting algorithm .

在虚拟现实领域，数字抠图技术的研究具有重要的意义。

Digital matting is important in virtual reality .

提出了一种基于感知颜色空间的快速自然图像抠图算法该算法首先手工把图像进行区域划分；

This paper proposes a fast natural image matting method based on perceptual color space .

基于感知颜色空间的自然图像抠图

Perceptual Color Space Based Natural Image Matting

抠图与合成是计算机图形学和视觉特效处理中的两个基本操作。

Matting and compositing are the two fundamental operations in computer graphics and visual effects .

抠图就是把任意形状的前景物体从图像中抽取出来的一种技术。

Matting is a technology of extracting the foreground of arbitrary shape from the image .

同时，目前抠图领域也缺乏标准且有效的像素级评价系统。

Meanwhile , image matting also lacks ofa standard , effective and pixe-wise evaluation system .

已有的抠图方案都是加入一些约束条件来求解抠图问题。

The existing matting methods were associated by some extra constraints to solve the matting problem .

数字抠图技术综述

A Survey on Digital Matting

传统的抠图技术尽管在业内已有广泛的运用，但是仍有诸多缺陷。

Traditional matting operation is widely used in the related field , but it still has some limitations .

提出一种用于自然图像抠图的高效的基于感知颜色空间的透明度估计方法。

This paper presents an efficient algorithm for alpha estimation based on perceptual color space in natural image matting .

为了取得更好的抠图效果，提出了一种基于马尔可夫随机场的自然图像抠图方法。

This paper proposes a Markov random field ( MRF ) model-based approach to natural image matting with complex scenes .

如何准确提取图像或者视频中感兴趣的部分一直是抠图领域研究的重点和难点。

How to accurately extract the interested part of image or video has been emphasis and difficulty in matting field .

抠图是计算机图形图像处理中最常用的技术，也是基本功能之一。

Cutout computer graphics is the most commonly used in Computer graphics image processing , is one of the basic functions .

背景差异抠图算法在许多视觉系统中因被用作物体跟踪、检测的预处理步骤而被广泛使用。

Background subtraction technique has been widely used in many vision systems as a preprocessing step for object detecting and tracking .