1) upside of circle
上半圆
1.
After abstracting the edges of the original image with complex backgrounds, using the Hough transform on the basis of upside of circle, the approximate position of human face is detected.
对复杂背景下的人脸图像提取边缘之后,先用基于"上半圆"的Hough变换初步检测到人脸的大致位置,然后在圆附近再用基于"上半椭圆"的Hough变换快速定位出人脸。
2) upside of ellipse
上半椭圆
1.
Then, using the Hough transform on the basis of upside of ellipse, human face is located rapidly near the circle.
对复杂背景下的人脸图像提取边缘之后,先用基于"上半圆"的Hough变换初步检测到人脸的大致位置,然后在圆附近再用基于"上半椭圆"的Hough变换快速定位出人脸。
3) top circular track
上部半圆轨道
4) singularities of Radon transform along round curves
沿上半圆Radon变换的奇性
5) Radon transform along upper-half circular curves
上半圆曲线Radon变换
6) semicircle
[英]['semisɜ:kl] [美]['sɛmɪ'sɝkḷ]
半圆
1.
With the blocking idea,the watermark is embedded into the Fourier semicircle region.
该算法基于分块思想将水印嵌入到傅立叶频域的半圆形区域。
补充资料：半圆
①圆的直径的两个端点把圆周分成两条弧，每一条弧叫做半圆。②半圆（弧）和直径所围成的平面。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条