Application of Hough Transform in Reading Determination of Dial Instrument
Cheng Jian · Ordnance Industry Automation · 2006
Application of Hough transform to reading determination of dial instrument includes reading determination and error analysis.The former includes: the CMOS pickup camera was used to sample the original images;the pictures were processed by intensifying and filtering;the smooth filter and middle-value filter were accomplished;the partial maximums of second hand,minute hand and hour hand were found;at last the reading determination was achieved through Hough transform.The precision grade of automatic determination system can certain the pixel.