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Abnormal image sample generation method and device and image detection method and device

A technology for abnormal images and samples, which is applied in the field of image processing and can solve problems such as low execution efficiency and poor mobility.

Pending Publication Date: 2021-03-26
BEIJING DAJIA INTERNET INFORMATION TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The present disclosure provides a method and device for generating abnormal image samples, and an image detection method and device, so as to at least solve the problem of poor mobility and low execution efficiency in the related art

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  • Abnormal image sample generation method and device and image detection method and device
  • Abnormal image sample generation method and device and image detection method and device
  • Abnormal image sample generation method and device and image detection method and device

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Embodiment Construction

[0089] Explanation of terms:

[0090] Video coding sequence: the video coding sequence is obtained after the video coding operation is performed on the video data. The video coding sequence includes multiple coding frames arranged continuously. The video coding sequence is divided into multiple image groups by preset intervals. Each image group mainly includes three A coded frame I frame, P frame, B frame.

[0091] The I frame is an Intra-coded Picture (intra-coded image frame): the I frame is also called a key frame, and the I frame has complete image data of the image frame. When performing a decoding operation on an I frame, only this frame is needed to complete the decoding operation to obtain an image frame without referring to other frames. The I frame is the reference frame of the P frame and the B frame, so the I frame will directly affect the decoding operation of the subsequent P frame and B frame of the same picture group; the I frame does not need to consider the ...

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Abstract

The invention relates to an abnormal image sample generation method and device and an image detection method and device. The abnormal image sample generation method comprises the steps: obtaining a video coding sequence, wherein the video coding sequence comprises a plurality of image groups; when decoding operation is executed on the video coding sequence, changing partial decoding reference information, conducting decoding operation according to the changed decoding reference information, and obtaining abnormal video data after the decoding operation is finished; and taking a plurality of abnormal image frames in the abnormal video data as the plurality of abnormal image samples. Due to the fact that the situation that part of decoding reference information is missed in the real decodingprocess is simulated in the process, abnormal image frames of different forms can appear in the obtained abnormal video data, and therefore abnormal image samples determined in the mode are various in style and good in effect.

Description

technical field [0001] The present disclosure relates to the technical field of image processing, and in particular to a method and device for generating abnormal image samples, and an image detection method and device. Background technique [0002] In order to facilitate the transmission of images, the first end can perform encoding operations on the images and send the encoded data to the second end, and the second end performs decoding operations on the encoded data to obtain and display the images. If an error occurs in the encoding operation or decoding operation of the image, it may cause an abnormal display of the image at the second end (for example, a blurry image appears on the image). For this reason, the second end can perform a detection operation on the image, so as to find out whether the image is displayed abnormally in time. [0003] In related technologies, it is possible to set a threshold range that represents the abnormality of pixels, and traverse each...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/159H04N19/177H04N19/587H04N17/00
CPCH04N19/159H04N19/177H04N17/002H04N19/587
Inventor 吴明达刘智辉闻兴戴宇荣于冰
Owner BEIJING DAJIA INTERNET INFORMATION TECH CO LTD
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