然后采用极坐标转换对虹膜图像进行归一化。
The unitary iris image is carried out through the transformation from Cartesian coordinates to polar coordinates.
然后采用极坐标转换对虹膜图像进行归一化。
We carry out a transformation to spherical polar coordinates.
杂波处理如恒虚警处理本身比较复杂，这类处理过程又要求快速，图像显示系统要求及时的把接收到的雷达方位数据从极坐标转换成直角坐标。
The yawp process such as (CFAR) is very complex, and have to complete on very short time, Image display system must change polar coordinates into Cartesian coordinates quickly.
在光栅扫描显示器上模拟传统PPI雷达显示器，不可避免地会遇到直角坐标与极坐标转换的问题，而雷达回波信号从极坐标到直角坐标的变换是决定系统性能的关键。
The issue of polar coordinate-orthogonal coordinate conversion, which is a key factor of the system, may be encountered inevitably as simulating traditional PPI radar indicator on raster scan display.
通常我们不这么做，一般情况下我们都是，从xy转换到极坐标的。
Usually, we don't do that. Usually, we actually start with xy and switch to polar.
但还是可以建立这个积分，然后转换到极坐标系下去求结果。
But still we could set this up and then switch to polar coordinates to evaluate this integral.
通常你转换到极坐标系下，有可能积分区域更容易建立。
I mean usually you will switch to polar coordinates either because the region is easier to set up.
把一个函数，在直角坐标和极坐标中转换。
You have a function that you want to switch between rectangular and polar coordinates.
把它转换到极坐标系下。
本文完成了雷达数据从极坐标到直角坐标的转换，解决了坐标转换易出现的死地址和盲区现象。
And the paper achieved conversion from the completed polar coordinates to rectangular coordinate, and solved two key problems, dead address and blind zone phenomenon.
本文完成了雷达数据从极坐标到直角坐标的转换，解决了坐标转换易出现的死地址和盲区现象。
And the paper achieved conversion from the completed polar coordinates to rectangular coordinate, and solved two key problems, dead address and blind zone phenomenon.
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