Image processing method and device
A technology of image processing and processor, which is applied in the field of image processing, can solve the problems of low image definition and poor image quality, and achieve the effect of improving the definition and good image quality
Active Publication Date: 2020-01-10
TENCENT TECH (SHENZHEN) CO LTD
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Problems solved by technology
[0005] Since the same processing method is used for each interpolation pixel point, the resolution of the processed image is low, and the quality of the processed image is still poor
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[0043] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0044] figure 1 It is a frame flow chart of enlarging images based on a network video chat system. In the video call scenario, when the sending end and the receiving end communicate through a video chat application, the sending end turns on the camera, acquires images through the camera, encodes the acquired images, and then sends the encoded video data to Receiving end. When the network condition is not good, in order to ensure the smooth progress of the video call between the sending end and the receiving end, the sending end usually actively reduces the video encoding rate. For example, under normal network bandwidth, the video encoding rate of the sending end is 320* 240, 480*360, etc., under extremely low network bandwidth, the ...
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The invention discloses a picture processing method and apparatus, and belongs to the technical field of image processing. The method comprises: obtaining position coordinates of any to-be-processed interpolation pixel point on an amplified image; according to the position coordinates, determining a position relationship between the to-be-processed interpolation pixel point and a specified original pixel point; and according to the position relationship between the to-be-processed interpolation pixel point and the specified original pixel point, and calculating an actual pixel value of the to-be-processed interpolation pixel point in a calculation mode corresponding to the position relationship, wherein different position relationships correspond to different calculation modes. According to the picture processing method and apparatus, the directivity between the interpolation pixel point and the original pixel point is comprehensively considered when the actual pixel value of each interpolation pixel point on the amplified image is calculated, and the actual pixel value of the interpolation pixel point is calculated in different calculation modes according to the position relationship between each interpolation pixel point and the original pixel point, so that the image definition is remarkably improved and the processed image quality is relatively high.
Description
technical field [0001] The present invention relates to the technical field of image processing, in particular to an image processing method and device. Background technique [0002] In a video call, the sender usually encodes the video data before sending it to the receiver. Limited by the network bandwidth, when the sending end performs video encoding, the encoding resolution is usually low, while the resolution of the display screen at the receiving end is generally higher than the encoding resolution. High-resolution video data needs to be displayed on a high-resolution display. In order to solve this problem, the receiver can enlarge the image. At present, the enlargement of the image is realized mainly by using an interpolation algorithm to increase the pixel points of the image. [0003] However, in the process of enlarging the image, due to the discontinuity of the gray value between the original pixel and the interpolated pixel, there is a mutation phenomenon, wh...
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IPC IPC(8): G06T3/40
CPCG06T3/4007
Inventor 李凯
Owner TENCENT TECH (SHENZHEN) CO LTD