Extracting pixel coordinate of control points is one of important methods in general camera calibration.
提取标志点像素坐标是传统的摄像机标定中关键的步骤之一，其精度影响着摄像机标定的精度。
This is because projected coordinate systems have a Y-axis which is the opposite of pixel coordinate systems.
这是因为预计坐标系统有一个Y轴是相反的像素坐标系。
Although some graphics languages don't let you use pixel coordinates, Windows GDI lets you use either system (as well as additional coordinate systems based on physical measurements).
尽管一些图形语言不让你用像素坐标，但是WindowsGDI让你用任意一个系统(甚至传统的基于物理度量的坐标系统)。
This article lies the initial groundwork required for establishing a ray pick routine, by providing algorithms and working code to convert a pixel coordinate into a ray in world space.
本文介绍建立光线拾取路径最初的基本工作，提供了将像素坐标转换到光线空间的算法和工作代码。
And the major task of input part is programming the IAL input engine of touch screen, then bringing forward the arithmetic of key functions and the mapping of physical coordinate and pixel coordinate.
输入部分则主要是实现触摸屏的IAL输入引擎实例，提出关键函数的具体流程，并探讨触摸屏物理坐标到象素坐标的映射算法。
Additional capabilities provide the means of testing the pixel color of a screen coordinate or even capturing a whole area of the screen as an image buffer.
其它的功能还提供了测试一个屏幕坐标的像素颜色的方法，甚至可以将屏幕上的一整块区域作为一个图像缓冲捕捉下来。
The process of parallax mapping requires that, for each pixel drawn, a texture coordinate, used to index one or more texture maps, be corrected by some displacement.
视差贴图技术的过程有以下要求：对每个像素都做处理中，一个贴图坐标能被多张贴图使用，并且能做一些偏移。
This way includes three processes: the first process provides a coordinate for ideal image height per pixel in the picture;
该计算方法包含了三个计算过程：第一，规定了每个像素理想像高的坐标表示法；
This way includes three processes: the first process provides a coordinate for ideal image height per pixel in the picture;
该计算方法包含了三个计算过程：第一，规定了每个像素理想像高的坐标表示法；
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