A Yellow License Plate Location Method Based on RGB Model of Color Image and Texture of Plate
Gang Li, Rongdi Yuan, Zuyuan Yang, Xiyue Huang · 2007
This paper presents a yellow license plate location algorithm employing RGB model of color image and black-white texture analysis of the plate directly to extract vehicle license plate from a complicated background image. According to the background color of the license plate in RGB color spaces, we transform the RGB image into a grayscale image directly as strengthening the background color of the license plate, then partition the intensity image to obtain a binary image which can stand out the license plate part. We filter out other area whose color is similar to the license plate by analyzing the texture characteristic. The tests show that this location method is straightforward, high efficiency, robust to interfere as well as high speed, better effect and wide application area.