BA7NXE I found an SSTV auxiliary software called "SSTV Tools", which includes three applications: SSTV Signal Generator, encoding software, to generate images as WAV audio files. SSTV Signal Viewer, signal checking software, to check SSTV signal output from WAV or MMV audio files. SSTV Image Denoiser, image denoising software, performs noise reduction on received image files. For images that can be fully received and processed to identify image content, removing stripes and improving clarity will result in improved image quality. If the images contain only noisy snowflake points, there's no way to proceed. Introduction to SSTV Tools SSTV Tools download link:http://dxatlas.com/SstvTools/Files/SstvTools.zip Original image: Comparison results: