Automated Identification of Sunspots Area Size Using Sobel Edge Detection and Image Histogram

American Journal of Science and Technology

EsraaZeki Mohammed¹  HussainSalih Akbar² 

[1] Kirkuk Department, State Company for Internet Services, Kirkuk City, Iraq.;Physics Department, College of Science, Kirkuk University, Kirkuk City, Iraq.

关键词: Color Histogram;    Sobel Filter;    Solar Flares;    Sunspots;   

学科分类：工程和技术（综合）

来源: AASCIT

【 摘 要 】

A sunspot is the cooler region of the Sun’s photosphere which appears dark on the Sun’s disc, and a solar flare is sudden, short lived, burst of energy on the Sun’s surface, lasting from minutes to hours. This paper presents automated identification of sunspots area. The technique includes Sobel edge-detection as well as an extraction of statistical properties of the detected objects for area calculation. The Sobel filter were applied on sun images after preprocessing for accurate detection of sunspots and active regions on the sun, then the color histogram were used to determine the exact number of pixels inside these detected edges which used to study sunspots growth.

【 授权许可】

Unknown