公开(公告)号：US20130294693A1

公开(公告)日：2013-11-07

申请号：US13733741

申请日：2013-01-03

Applicant: QUALCOMM INCORPORATED

Inventor： Ramin Rezaiifar ,  Serafin Diaz Spindola

IPC: G06T5/00

CPC classification number: G06T5/002 ,  G06K9/346 ,  G06K9/40 ,  H04N1/409

Abstract: The noise in an image having text is removed by convolving a shaped kernel centered on a pixel for each pixel in the image. The shaped kernel has a shape configured to identify pixels that are not part of the text. For example, the shaped kernel may be shaped with zeros in a center of the kernel to identify pixels that are not part of the text. A value for the pixel is set to erase the pixel when the resulting convolution value for the pixel is less than a threshold. The process may be repeated multiple times for differently shaped kernels, including kernels of different sizes and different configurations, such as having values greater than one in at least one of a row, column, and diagonal.

Abstract translation: 具有文本的图像中的噪声通过以图像中的每个像素的像素为中心的成形内核进行卷积来去除。 形状的内核具有被配置为识别不是文本的一部分的像素的形状。 例如，形状的内核可以在内核的中心以零形状来识别不是文本的一部分的像素。 当所得到的像素的卷积值小于阈值时，设置像素的值来擦除像素。 对于不同形状的内核，包括不同大小和不同配置的内核，例如在行，列和对角线中的至少一个中具有大于1的值，该过程可以重复多次。