-
公开(公告)号：US20190020805A1
公开(公告)日：2019-01-17
申请号：US15663362
申请日：2017-07-28
申请人： Intevac, Inc.
CPC分类号： H04N5/2355 , G06T5/007 , G06T5/50 , H04N5/355 , H04N5/35527 , H04N5/35581
摘要： Dynamic range of a photosensor is controlled dynamically improving image detail especially in dark and bright areas of the image. At least one reset threshold and one reset value are set. At the end of the frame integration the value of the average pixel and the value of the brightest pixel that was not reset are determined and, based on that, at least one of the reset threshold and the reset value are changed. The change may reduce/increase the reset threshold such that more/less pixels are being reset, may reduce/increase the reset value thereby causing the pixels to be reset to a lower/higher value, or change the timing of the reset. In some embodiments, a calculated value for the reset threshold and the reset value are averaged with calculated values of prior N frames, and the result is applied to the next frame.
-
公开(公告)号：US10425589B2
公开(公告)日：2019-09-24
申请号：US15663362
申请日：2017-07-28
申请人： Intevac, Inc.
摘要： Dynamic range of a photosensor is controlled dynamically improving image detail especially in dark and bright areas of the image. At least one reset threshold and one reset value are set. At the end of the frame integration the value of the average pixel and the value of the brightest pixel that was not reset are determined and, based on that, at least one of the reset threshold and the reset value are changed. The change may reduce/increase the reset threshold such that more/less pixels are being reset, may reduce/increase the reset value thereby causing the pixels to be reset to a lower/higher value, or change the timing of the reset. In some embodiments, a calculated value for the reset threshold and the reset value are averaged with calculated values of prior N frames, and the result is applied to the next frame.
-
搜索结果
2 条记录 (耗时 0.01 秒)
