The installation angle determined by the radiation of the sun usually affects the use rate of solar energy. In order to find the reasonable installation angle of the PV array, this paper applies data fitting method in PV power generation, and takes a sample of a year's solar radiation data to analyze, finally obtain the general rule of radiation intensity. Then we can get the appropriate installation angle to optimize and improve PV system.

As the use of applications employing video contenk becomes widespread, it is crucial for representation systems to be able to handle video effectively and flexibly. In this paper, the authors propose a method that has enriched video contents and an application for future interactive TV service, called Advanced Database TV (ADTV).The system requires three basic methods: one is a video handling method based on video objects; another is a construction method of a video object database achieved by feature extraction and tracking of objects; and the third is aprotocol for delivery annotations of objects which are given by users. The objective is to provide a multi-layer video object database based on users' interactive description of video objects. The database will have the ability to organize incomplete descriptions of video objects in each frame, mainly annotation, position and motion. We have implemented the prototype system, which provides users functions such as semi-automatic enrichment of annotations, similarity retrieval of objects, and semantic indexing, based on the video object database.0-7803-6536-4/00/$10.00 (c) 2000 IEEE

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Visible and infrared cameras can solve the practical problem of high-resolution image recognition in complex operation scenes of substations, but the prerequisite is that visible and infrared cameras need to be calibrated effectively. In this paper, a calibration method of visible light and infrared camera based on edge detection is proposed. The method adopts a visible light camera and an infrared camera to shoot two images of the same calibration plate, namely a visible light image and an infrared image, and implements preprocessing. It detects the edges of two images, extracts feature point description information by using a scale invariant feature conversion algorithm and determines four groups of determined matching point pairs. It solves a transformation model by combining an internal parameter matrix to obtain an external parameter matrix and realizes visible light and infrared camera calibration. The results verify that the parallel equipotential error is less than zero. One under the application of the method, which indicates that the calibration effect of the method is better.

With the construction of a large number of substations, the display problem of high-temperature equipment has been concerned. White light and infrared image registration and fusion method based on NSCT transform are designed to realize the display of high-temperature equipment in the substation. The white light and infrared images are enhanced based on NSCT. After the two images are calibrated, the white light and infrared images are registered by combining feature registration and edge detection methods. An image fusion algorithm is designed by combining wavelet transform and IHS transform to realize the fusion processing of two images. The test results indicate that the average gradient, information entropy, spatial frequency, and standard deviation of the designed method are higher. The image registration and fusion effect are in line with the human subjective vision, and the registration and fusion effect is better.