Implementation of a Wavelet Encoder-Decoder Image on a Microcontroller

This paper developed a modernized image compression algorithm based on the wavelet transform, which is implemented in the MATLAB Simulink development environment for use in modern microcontrollers and minicomputers. The block diagram of the encoder and decoder is shown. The results of the development of the encoding and decoding device based on the Raspberry PI 3 Model B microcontroller are presented. The comparison of the performance indicators of the algorithm with the IPEG2000 and MPEG4 encoders is made. The metrics of the signal-to-noise ratio were used as quality indicators, and also were used the signal-to-noise ratio at the edges of objects in the scene and the size of the compressed image. Comparison is made for ultra-high definition images and for video sequences. The comparison results are given for three bit rates, namely 150, 200 and 220 Mbps. When using the proposed compression method, the file size on disk is 18 times smaller than that of JPEG2000.