Fig. 12From: Line and circle detection using dense one-to-one Hough transforms on greyscale imagesComparison between the DHT and others HT for line detection. a On clean image. b On image with additive noise (SNR = 5). c On image with salt and pepper noise (p=5%). d On non-uniform contrast image (c=4). Each colour corresponds to a different method. Red DHT, green RHT, blue SHT, magenta PPHTBack to article page