查询词典 image compression

At present, the dominating new standards used for HDTV video compression are H.264/AVC and AVS, both of them adopt block-based integer transform, quantisation and block-based motion compesation, which will be the source of blocking artifacts and will reduce the subjective video quality and compression performace.

在现阶段，用于HDTV视频压缩编码的最新标准主要有H.264/AVC和AVS，它们都采用基于块的整数变换、量化和运动补偿技术，不可避免的会引入块效应，严重影响了图像的主观质量和编码效率。

In fact, it is probable that little gain can be made by selecting a geometric compression ratio which would raise the gas temperature by adiabatic compression behind the temperature of the hot zones (except for accelerated heating by gas density and proximity effect, which would make it possible to achieve higher RPM).

事实上，它很可能使小增益可以作出选择几何压缩比率，从而将提高的效果，气体温度接近后面的绝热压缩气体密度和温度的热区（除加速它加热能够达到更高的转速）。

The efficiency of the Carnot cycle increases with the compression ratio—the ratio of gas volume at full expansion to its volume at full compression.

在与压缩比，在充分膨胀比的天然气量在全压缩到其批量卡诺循环提高了效率。

In order to help for evaluating properties of soil in interaction more precisely, the paper applies elastic theory solution on different modulus in tension and compression for vertical load into semi-infinite elastic body. Through quoting Heaviside function, the solution of elasticity theory with different modulus in tension and compression is established founded on the solution of elasticity theory for the material incapable in tension and Mindlinsolution for equal modulus.

为使地基土在共同作用中的行为特征评价更为合理，本文应用了半空间问题竖向荷载下地基土的拉压模量不同弹性理论解，该理论解是通过引入Heaviside函数，利用不能承受拉应力材料的弹性理论解并结合拉压模量相等的经典Mindlin解而获得。

In order to overcome these deficiencies, after analyzed characters ofseveral popular functions in image Sharpness evaluation, a new image sharpness evaluation model was presented which is based on the image absolute central moment.

该模型通过引入图像中心距和高通滤波图像中心距的线性组合，在保持评价结果良好全局性的同时提高了其局部量化精度。

After extracting target image gradient,this mehtod can put image gradient into CPM,and then figure out the affine transform parameter of the precongnition model and target image.

最后采用模板图像轮廓线在电场化后的梯度图像中的最大能量熵值，利用遗传算法确定先验模板图像与目标图像之间的仿射变换参数，达到轮廓匹配的目的。

Linear CCD Push-broom Image; Frame Perspective Image; the Geometry Model of Sensors; Perspective Projection; Parallel Projection; Affine Transformation; the Rational Function Model; Epipolarity; Image Matching; the Extraction of Building

工程科技II，工业通用技术及设备，工业通用技术与设备线阵CCD推扫式影像；框幅式中心投影影像；传感器模型；透视投影；平行投影；仿射变换；有理函数模型；核线模型；影像匹配；建筑物提取

For macro-observer, the actual effect of the high precision dynamic 3D image maps is equal to take the plane in certain height to observe along the selected air lane; for image interpreters, the maps offer the true, objective, continuous ground-sight images that can be repeatedly used for macroscopic analysis. The method of "RS geo-interpretational 3D visualizing and dynamical analysis to image" exploits new working ideas for regional geo-survey in altiplano, and it is great significance and practical value to improve modern degree of digital regional geo-survey.

生成的高精度三维遥感影像动画系列图，对于宏观观察者(如领导干部、项目决策者等)而言，其实际效果相当于乘坐在一定高度的飞行器上进行航空路线观察；对于遥感图像解译者而言，高精度的三维影像动画系列图提供了可供反复使用的真实、客观、信息连续的宏观分析地面景观影像。

The anaglyph effect combines two image sources, the result is the red channel from the left image source and the green and blue channels from the right image source.

该立体图像效果结合了两种来源，结果是从左侧图像源和右图像源的绿色和蓝色通道红色通道。

In view of the problem caused by high-frame rate image sensor to analog-to-digital converter of video image, video image preprocessing circuits are designed.

针对高帧频图像传感器所获取的模拟视频图像在模数转换中所遇到的问题，设计了视频图像预处理电路。

They have quite a lot of work to do.

他们有许多工作要做。

Let us give you a more elaborate example of this process.

让我们给你这个过程的更多的详细例子。