查询词典 projection gradient method

When the projection is placed behind a screen (as it is in television and various video conferencing applications where the image is displayed on a monitor or a fabric screen) it is described as a back projection system.

当投影仪放置在屏幕的后方时（就像电视中以及各种电视会议中使用的那样，图像被投影到监控器或编织物屏幕上），称为背面放映系统。

Photographic paper texture photos would normally have been developed, the media meet the " ouality business card printing technology " available with photos as realistic as possible, and you can provide a picture size from the General to the A3 + four size, suitable for all levels of user business card printing; kaixin-stick is a unique business card printing medium, the user you can use a business card printing papiermaschinen software provides more than 300 species of colourful background image box and photo overlappedness, the most imaginative, made of very attractive paper kaixin-pastes; ink－jetprinting matte coated paper is a three-metre-long A2 format with oil painting business card printing effect of medium, apply to the business card printing a variety of significant photos, pictures of art and design needs; users can use the t-shirt transfer paper production has its own unique style t-shirt, the effect is quite good; ink－jetprinting transparency can provide the perfect projection effect, apply to the projection, Convention and advertising and lively, images, making 36 0dpi; banner headline in the paper available 360dpi, 720dpi or 1440dpi business card printing that is tailored to a variety of activities business card printing banner.

照片纸的质地与通常冲洗的照片一样，该介质配合"照片质量制卡技术"可获得同照片一样逼真的效果，并且可以提供从普通照片大小到A3+的四种尺寸，适合各层次用户照片制卡的需要；开心妙妙贴是一种独特的制卡介质，用户可借助制卡机配套软件提供的300余种五彩缤纷的背景图框与照片叠加，进行最富想象力的搭配，制成极富个性魅力的开心妙妙贴贴纸；喷墨布纹纸是一种A2幅面三米长具有油画制卡效果的介质，适用于制卡各种大幅照片、艺术设计图片的需求；用户可以用T恤转印纸制作具有自己独特风格的T恤衫，效果相当不错；喷墨透明胶片能提供完美的投影效果，适用于投影、会议及广告等，图象生动逼真，可制卡36 0dpi；横幅大标题纸可用360dpi、720dpi或1440dpi 制卡，适合为各种活动制卡横幅。

In order to reduce the effect of imaging recognition error, the recognition location of projection is extended and refined, and the projection edge of sphere centre is implanted. So a pyramid is formed by radial line between the camera optical centre and the implanted point. A curved face is formed by the two pyramids and barbette sphere. To calculate the shape centre of the common section of the curved face, the shape centre is the coordinate of sphere centre.

为了降低图像识别误差的影响，对投影的识别位置进行拓展和细化，并对球心投影边界进行插值，摄像机光心与插值点连线射线形成了一个锥体，两摄像机的锥体分别与炮台球面相交形成曲面，计算两曲面公共部分的形心，即为球心位置。

Whereas parallel projections are used to project points onto the image plane along parallel lines, the perspective projection projects points onto the image plane along lines that emanate from a single point, called the center of projection.

与平行投影沿着平行线将物体投影到图像平面上不同，透视投影按照从投影中心这一点发出的直线将物体投影到图像平面。

For patients of CT-aided acupuncture guoup, acupuncture needles were inserted into the subcutaneous tissues around the focus-projection scalp area displayed by CT,with the needle tips towered the center of the projection .

治疗组以CT所示病灶在同侧头皮的最近距离的投射区的周边为针刺部位围针治疗，方向皆刺向投射区的中心；对照组采用传统针刺病灶侧头皮言语一、二、三区(根据失语症的性质分别选取)的方法治疗。

In this paper, according to the characteristics of central projection, aerial photographs were analyzed to discuss displacement of images under tilt conditin or caused by ground undulation, based on which the principles of tilt error and projection error were summarized.

根据中心投影的特性，论述了像片在倾斜条件下所引起的像点位移和像片因地面起伏而引起的像点位移，在对其进行分析的基础上总结出倾斜误差和投影误差的规律，从而说明了不能把像片当作地形图使用。

Central projection: When the lines of projection meet at a point

中心投影法：投射线汇交于一点的投影法称为中心投影法。

In this paper, according to the characteristics of central projection, aerial photograph s were analyzed to discuss displacement of images under tilt conditin or caused by ground undulation, based on which the principles of tilt error and projection error were summarized.

本文以航空摄影测量像片为分析对象。根据中心投影的特性，论述了像片在倾斜条件下所引起的像点位移和像片因地面起伏而引起的像点位移，在对其进行分析的基础上总结出倾斜误差和投影误差的规律，从而说明了不能把像片当作地形图使用。这是使用航空像片时必须注意的基本问

According to the characteristics of the gray projection curves, a pair of maximum and minimum points are found near the central position of each gray projection curve.

照相机在靠近或远离目标景物的运动过程中，如保持聚焦中心点不变，则前后两帧图像间存在一致的缩放关系。

According to the characteristics of the gray projection curves, a pair of maximum and minimum points are found near the central position of each gray projection curve. The differences in position are calculated respectively and the scale change parameter is obtained as the ratio of both differences.

此时，可根据尺度变化下图像灰度累积投影曲线的特点，分别计算参考帧和当前帧的投影曲线上一对极大—极小值点的坐标差值，以它们的比值作为缩放系数，实现实时求取。

When this condition occurs, inbound replication with the source partner is stopped on the destination domain controller and event ID 2042 is logged in the Directory Services event log.

计算机密码学是研究计算机信息加密、解密及其变换的科学，是数学和计算机的交义学科，也是一门新兴的学科。

Instructions: click on the thumbnails to see a larger image, then use the left-right arrow keys to scroll through the slideshow.

使用说明：滑鼠点在小图上即可放大观赏。开启后键盘左右键可用来换照片。