A foundation cloud picture restoration method based on an improved Criminisi algorithm

Abstract

The invention relates to the technical field of digital image processing, and provides a new foundation cloud picture restoration method which can better restore an image of a foundation cloud picture, expand an effective area of the cloud picture and automatically mark the positions of a shading belt and a lens arm in the cloud picture, namely, determine a to-be-restored area and restore the foundation cloud picture. According to the technical scheme, the foundation cloud picture repairing method based on the improved Criminisi algorithm comprises the following steps that 1, the position of ato-be-repaired area is extracted; (1) determining the shooting time of a TSI cloud picture and the longitude and latitude of the position where equipment is located, (2) calculating the solar declination angle Delta, (3) calculating the solar time angle omega, (4) calculating the solar azimuth angle Gamma s and the zenith angle theta z, (5) determining the position of a shading band, (6) determining the position of a lens arm, and (2) repairing the cloud picture.

Description

technical field [0001] The invention relates to the technical field of digital image processing, in particular to a method for repairing ground-based cloud images in a photovoltaic system. Background technique [0002] Photovoltaic power generation is an energy conversion system that uses the photovoltaic effect to directly convert solar radiation energy into usable electrical energy. The amount of power output by using photovoltaic power generation is determined by the amount of solar radiation received by the solar photovoltaic panel, so it is closely related to real-time weather conditions, which will lead to instability of output power performance and estimation errors. The output power of photovoltaic power generation is closely related to the ground irradiance. Cloud energy directly affects the ground irradiance. Its generation, demise and movement lead to uncertain changes in output power. Analyzing and discussing how clouds affect ground irradiance has become a key ...

AI Technical Summary

Problems solved by technology

TSI equipment solves the cloud image observation problem to a certain extent, but because there is a shading band on the mirror surface of the TSI equipment, and the mechanical arm used to support the lens is also projected on the mirror surface, the obtained cloud image information is incomplete, and the analysis of the image A series of operations such as a series of operations have a certain impact, so it is necessary to repair the ground-based cloud image and restore the real situation of the cloud image

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