Development of Novel Visual Illuminance Measurement Technology Using Tile Pyramid Method for Image Process

• Main Authors: Wei-HsiangChen, 陳煒翔
• Other Authors: Heiu-Jou Shaw
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/25519893527056029340

碩士 === 國立成功大學 === 系統及船舶機電工程學系碩博士班 === 101 === The visual technology of illuminance measurement is more efficient and convenient for underwater optical measurement, and it solves the problem of the single point limitation in traditional illuminance measurement. The CCD image sensors are used for capturing picture of the light source illumination. The image intensity of the picture can be acquired by using image signal algorithm. Within the areas of similar image intensity, the tile pyramid cutting technology can process image segmentation to enhance the accuracy of the calculated illuminance values. After that, the pictures of light source illuminance can be produced by using linear regression analysis and graphic processing method. The experiment result demonstrates that the error of the calculated illuminance value between using 2-D visual technique of illuminance measurement and the single point of traditional measured illuminance value is less than 10%. Furthermore, the time is shortened from minutes to seconds by using 2-D visual technique of illuminance measurement. This result is suitable for light source illumination measurement in the underwater environment.