Research On Test Technology For Luminance Distribution Based On A Digital Camera

Luminance is a very important index in the lighting industry, butthere are many limitations for existing equipment in the process of luminancedistribution testing. Therefore it can not be acceptted by people who testslighting qualify. With the development of electronic technology and opticaltechnology, on the one hand digital camera manufacturing technology isimproving daily, and on the other hand the technology of digital pictureprocessing has been rapidly development. With these advances the luminancedistribution of target object can be got by using digital camera and digitalpicture processing technology. Using the luminance distribution test systemof digital camera will be a new test way to get luminance information. Thistest method has many advantages, such as: high definition, positioningaccuracy, short test time, good repeatability, low cost, easy to carry, a widerange test and so on. By the way, it can realize the processing of the test andthe data processing separately. Therefore digital camera can be used as agood meter during testing lighting environment. The main work of thisexperiment includes:(1)Get the function of digital testing lighting through studying digitalcamera and digital picture processing, and find some reasons that caninfluence testing data;(2)The performances, such as: uniformity, stability, dynamic range ofthe digital camera, are detected and analyzed;(3)After determining the calibration method, the BenQ GH600digitalcamera calibration experiments are carried out. Then analyze theexperimental results;(4)Work out software which can be used for image processing and gotimage luminance information;(5)Check out the whole testing system and analyze the error; The test technology for luminance distribution based on digital cameracan become a new test instrument for lighting industry.