Patent ID: 9147257
Filing Date: 2015-09-29
Classification: G06K,G06T

Abstract:
1. A consecutive thin edge detection system, comprising: a consecutive thin edge detector, receiving a color pixel array including a plurality of color pixels, alternately setting each color pixel as a target pixel, detecting a difference value between a plurality of first green pixels and a plurality of second green pixels nearby the target pixel, and determining whether the target pixel comprises a consecutive thin edge feature or not according to the difference value; wherein the plurality of first green pixels are in red pixel rows which comprises a plurality red pixels and the plurality of first green pixels, and the plurality of second green pixels are in a blue pixel row which comprises blue pixels and the plurality of second green pixels; a color gradient estimator, coupled to the consecutive thin edge detector, wherein the color gradient estimator estimates color gradients of the target pixels having the consecutive thin edge feature to generate a horizontal gradient value and a vertical gradient value; and a direction indicator, coupled to the color gradient estimator, wherein the direction indicator generates direction indicating values corresponding to the target pixels having the consecutive thin edge feature respectively according to the horizontal gradient value and the vertical gradient value.