公开(公告)号：US08897561B2

公开(公告)日：2014-11-25

申请号：US13649118

申请日：2012-10-11

Applicant: Novatek Microelectronics Corp.

Inventor： Yu-Shu Liu ,  Chun-Wei Chen ,  Chun Wang ,  Wan-Hsi Hsieh

IPC: G06K9/00 ,  G06K9/48

CPC classification number: G06K9/48 ,  G06K9/00711 ,  G06K9/3266

Abstract: Method for detecting disappearance of a pattern is used to detect whether a fixed-still pattern in dynamic displayed images disappears. Method includes analyzing a pattern characteristic parameter which represents the fixed-still pattern from each of images continuously displayed in a time sequence, It is checked whether the pattern characteristic parameter fast decreases from at least greater than a high level to at least less than a low level, as a first state transition. Sum of absolute difference (SAD) values for all of the pixels between a previous image and a current image is calculated. It is checked whether the sum of the SAD values fast increases from at least less than a low level to at least greater than a high level, as a second state transition. When the first state transition and the second state transition occur simultaneously, it is determined that the fixed-still pattern disappears in the display.

Abstract translation: 用于检测图案消失的方法用于检测动态显示图像中的固定静止图案是否消失。 方法包括从按照时间序列连续显示的每个图像中分析表示固定静止图案的图案特征参数。检查图案特征参数是否从至少大于高水平至少低于低水平 水平，作为第一个国家过渡。 计算先前图像和当前图像之间的所有像素的绝对差（SAD）值之和。 作为第二状态转移，检查SAD值的和是否从至少小于低电平快速增加到至少高于高电平。 当第一状态转变和第二状态转变同时发生时，确定固定静止图案在显示器中消失。

公开(公告)号：US20130136357A1

公开(公告)日：2013-05-30

申请号：US13649118

申请日：2012-10-11

Applicant: Novatek Microelectronics Corp.

Inventor： Yu-Shu Liu ,  Chun-Wei Chen ,  Chun Wang ,  Wan-Hsi Hsieh

IPC: G06K9/62

CPC classification number: G06K9/48 ,  G06K9/00711 ,  G06K9/3266

Abstract: Method for detecting disappearance of a pattern is used to detect whether a fixed-still pattern in dynamic displayed images disappears. Method includes analyzing a pattern characteristic parameter which represents the fixed-still pattern from each of images continuously displayed in a time sequence, It is checked whether the pattern characteristic parameter fast decreases from at least greater than a high level to at least less than a low level, as a first state transition. Sum of absolute difference (SAD) values for all of the pixels between a previous image and a current image is calculated. It is checked whether the sum of the SAD values fast increases from at least less than a low level to at least greater than a high level, as a second state transition. When the first state transition and the second state transition occur simultaneously, it is determined that the fixed-still pattern disappears in the display.

Abstract translation: 用于检测图案消失的方法用于检测动态显示图像中的固定静止图案是否消失。 方法包括从按照时间序列连续显示的每个图像中分析表示固定静止图案的图案特征参数。检查图案特征参数是否从至少大于高水平至少低于低水平 水平，作为第一个国家过渡。 计算先前图像和当前图像之间的所有像素的绝对差（SAD）值之和。 作为第二状态转移，检查SAD值的和是否从至少小于低电平快速增加到至少高于高电平。 当第一状态转变和第二状态转变同时发生时，确定固定静止图案在显示器中消失。