To study ray (vector) analysis and pixel (grid) analysis which are applied in the calculation of field strength of radio coverage, and compare their differences and characteristics.
研究无线覆盖场强计算中使用的射线分析法(矢量法)与像素分析法(栅格法)，并比较二者的区别和特性。
Using correlation calculation to further subdivide gray project data, precision of image motion characteristic position information was improved, and sub pixel image motion vector could be gotten.
而通过采用相关计算进一步细分灰度投影数据，可以提高图像运动特征位置信息的精度，获得亚像元级的图像运动矢量。
Put forward the calculation that pixel direction distance length as foundation, the stroke extraction way according to the structure knowledge of Chinese characters completely.
提出以计算象素点的方向游程长度为基础，完全基于汉字的结构知识的笔划提取算法。
This method avoids analyzing each pixel of image. It performs with less calculation and higher speed, and satisfies robust real-time basically. It also resists the effect of shadows and water marks.
该方法可以避免对所有像素点逐个分析，运算量小，检测速度快，基本满足实时性要求，具有一定的抗阴影和水迹的能力。
This method avoids analyzing each pixel of image. It performs with less calculation and higher speed, and satisfies robust real-time basically. It also resists the effect of shadows and water marks.
该方法可以避免对所有像素点逐个分析，运算量小，检测速度快，基本满足实时性要求，具有一定的抗阴影和水迹的能力。
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