Abstract: A compressed ultrafast imaging device based on time stretching, and a method and a storage medium are disclosed. The compressed ultrafast imaging device based on time stretching includes: a laser light generation module, configured to emit laser light; a collimation module, optically connected to the laser light generation module and configured to collimate the laser light; a laser light conversion module, optically connected to the collimation module and configured to convert the collimated laser light into spatial light; an encoding module, optically connected to the laser light conversion module and configured to encode according to the spatial light; an image acquisition module, connected to the encoding module; and a control processing module, communicatively connected to the laser light generation module and the image acquisition module respectively, and configured to obtain a target image sequence frame based on an observed image sent by the image acquisition module.

Abstract: An ultrafast diffraction imaging system and method, and a storage medium are disclosed. The ultrafast diffraction imaging system includes: a laser generation module configured to emit laser; a time stretching module optically connected to the laser generation module and configured to stretch the laser into a time data stream; an encoding module optically connected to the time stretching module and configured to perform encoding according to the time data stream to obtain an encoding matrix; an image acquisition module connected to the encoding module and configured to capture the encoding matrix to obtain an observed image; and a control processing module respectively in communicative connection with the laser generation module and the image acquisition module, and configured to perform phase reconstruction according to the observed image transmitted by the image acquisition module to obtain a target phase change sequence frame.

Abstract: A compressed ultrafast imaging device based on time stretching, and a method and a storage medium are disclosed. The compressed ultrafast imaging device based on time stretching includes: a laser light generation module, configured to emit laser light; a collimation module, optically connected to the laser light generation module and configured to collimate the laser light; a laser light conversion module, optically connected to the collimation module and configured to convert the collimated laser light into spatial light; an encoding module, optically connected to the laser light conversion module and configured to encode according to the spatial light; an image acquisition module, connected to the encoding module; and a control processing module, communicatively connected to the laser light generation module and the image acquisition module respectively, and configured to obtain a target image sequence frame based on an observed image sent by the image acquisition module.

Abstract: An image denoising method and system, and storage medium are disclosed, which relate to the technical field of image processing. The method including: performing blur processing on an image to be processed by means of empirical mode decomposition to obtain a blurred feature image; performing edge detection processing on the feature image to obtain an edge detection operator of the feature image; calculating a diffusion threshold of a preset anisotropic diffusion equation according to the edge detection operator, and determining an improved anisotropic diffusion equation according to the calculated diffusion threshold; and performing, by using the improved anisotropic diffusion equation, diffusion processing on the image to be processed to obtain denoised image information. With the above method, the impact of the image noise on edge detection results can be weakened and the image denoising effect can be improved.