Description: 本程序采用一种基于垂直Sobel算子检测边缘和投影法的车牌定位方法,根据车牌区域竖直纹理突出的特点，利用Sobel垂直算子提取边缘，然后投影得到车牌的水平投影图，利用水平投影图分割出车牌，再运用膨胀运算进行车牌垂直定位。利用旋转投影法寻找车牌倾斜角度，然后用双线性插值进行车牌图像倾斜矫正。对经过精定位的车牌利用垂直投影法，找出各个字符的中心点，根据字符中心点位置进行切割。同时将切割出来的图片与数据库中的每张模板图片进行减法运算，计算该图片与模板的均方误差，其均方误差最小的模板即为识别出的字符。-This program uses edge detection and projection of license plate positioning method based on vertical Sobel operator, according to a prominent feature of the license plate area vertical texture operator Sobel vertical edge extraction, then the horizontal projection of the projector to get the license plate, the horizontal projection the Figure split out the license plate, and then use the the dilation operation license plate vertical positioning. Take advantage of the rotation projection method to find the license plate tilt angle, and then the license plate image tilt correction bilinear interpolation. The focal point for fine positioning license plate using the vertical projection method to identify each character, according to the the character center point cut. Cutting out pictures with each template images in the database, subtraction, calculation of the mean square error of the picture with the template, the mean square error of the smallest template is identified characters. Platform: |
Size: 7168 |
Author:埃米尔 |
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Description: 本文采用 Sobel 算子检测待插像素点周围的原图像像素点，判断其是否边缘点并检测出边缘方向，再依据沿边缘走向的像素点灰度变化平缓，边缘两侧像素点灰度值突变的进
行待插像素点的自适应插值。该算法具有较低的算法复杂度良好的客观质量，视觉效果以及最佳的图像缩放综合性能。本文工作是正在开发的数字电视图像后处理SoC芯片中
的一部分，下一步工作为：完成本文算法的硬件实现，将其作为 SoC 芯片中的图像缩放模块，与降噪模块、去隔行模块等其他 IP 模块一起形成完整的数字电视图像后处理 SoC芯片。
-In this paper, Sobel operator detected around the point to be interpolated pixel of the original image pixel to determine whether the detected edge point and the edge direction, and then based on the pixels along the edge to smooth gray change, on both sides of the edge pixel gray value mutation the conduct to be interpolated pixel adaptive interpolation. The algorithm has lower computational complexity of the objective good quality, best visual effects and image scaling overall performance. This work is being developed for digital TV SoC chip image post-processing part, the next step is: complete hardware implementation of the algorithm, as a SoC chip image scaling module, the module with noise reduction, de-interlacing, and other modules IP module together to form a complete digital television image post-processing SoC chip. Platform: |
Size: 5325824 |
Author:吴江 |
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Description: 当原图像像素点处于边缘区域时，沿Sobel算子确定的边缘方向进行自适应插值，当原图像像素点处于非边缘区域时，采用双线性插值法进行插值。-When the original image pixel is in the edge area, along the Sobel operator to determine the edge direction of adaptive interpolation, when the original image pixels in the non edge area by bilinear interpolation method to interpolate.
Platform: |
Size: 25600 |
Author:邝涵菲 |
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Search - edge-interpolation sobel