Image transmission method and device

The invention discloses an image transmission method, relates to the technical field of communication, and can solve the problem of a relatively large bit rate of a transmitted image in a video call process in the prior art. The image transmission method is applied to a sending end, and the method comprises the steps of determining a pixel difference value between a to-be-transmitted frame image and a reference frame image; performing coding on the pixel difference value to obtain coding data of the to-be-transmitted frame image; and sending the coding data of the to-be-transmitted frame image to a receiving end. The image transmission method and device disclosed by the invention are applied to an image transmission process of a video call. 本发明公开了种图像传输的方法，涉及通信技术领域，能够解决现有技术在视频通话的过程中存在传输图像的码率较大的问题。所述图像传输的方法应用于发送端，所述方法包括：确定待传输帧图像与参考帧图像的像素差值；对所述像素差值进行编码，得到待传输帧图像的编码数据；将所述待传输帧图像的编码数据发送给接收端。本发明适用于视频通话的图像传输过程中。