公开(公告)号：US09800796B1

公开(公告)日：2017-10-24

申请号：US15174819

申请日：2016-06-06

Applicant: OMNIVISION TECHNOLOGIES, INC.

Inventor： Wenchao Zhang ,  Timofey Uvarov ,  Sarvesh Swami ,  Willie Teck Tian Png ,  Donghui Wu

IPC: H04N5/235 ,  H04N5/225 ,  H04N5/378 ,  G06T7/00 ,  G06K9/46 ,  G06T7/60 ,  G06K9/52

CPC classification number: H04N5/2355 ,  G06K9/4604 ,  G06K9/4661 ,  G06K9/52 ,  G06T5/009 ,  G06T5/50 ,  G06T7/0085 ,  G06T7/60 ,  G06T2200/21 ,  G06T2207/10016 ,  G06T2207/20208 ,  G06T2207/20221 ,  H04N5/2253 ,  H04N5/378

Abstract: An imaging system includes an image sensor to capture a sequence of images, including a low dynamic range (LDR) image and a high dynamic range (HDR) image, and a processor coupled to the image sensor to receive the LDR image and the HDR image. The processor receives instructions to perform operations to segment the LDR image and HDR image into a plurality of segments. The processor also scans the plurality of LDR and HDR image segments to find a first image segment in the plurality of LDR image segments and a second image segment in the plurality of HDR image segments. The processor then finds interest points in the first and second image segments, and determines an alignment parameter based on matched interest points. The LDR image and the HDR image are combined in accordance with the alignment parameter.