Abstract
I suggested a method I went wrong, and to evaluate a how I used a thought, a brightness image for when it was not necessary to distinguish a source of light in this study by considering real brightness distribution.Using a result of the subject experiment that let you estimate dazzle as brightness, I demanded a heaviness charge account function by an angle from eyes direction and derived an expression I used this function from a brightness image, and to predict dazzle evaluation.Next, I examined a brightness image and relations of UGR by calculation analysis and found a calculation type to calculate UGR value from a brightness image.