- 1、本文档共4页,可阅读全部内容。
- 2、有哪些信誉好的足球投注网站(book118)网站文档一经付费(服务费),不意味着购买了该文档的版权,仅供个人/单位学习、研究之用,不得用于商业用途,未经授权,严禁复制、发行、汇编、翻译或者网络传播等,侵权必究。
- 3、本站所有内容均由合作方或网友上传,本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺!文档内容仅供研究参考,付费前请自行鉴别。如您付费,意味着您自己接受本站规则且自行承担风险,本站不退款、不进行额外附加服务;查看《如何避免下载的几个坑》。如果您已付费下载过本站文档,您可以点击 这里二次下载。
- 4、如文档侵犯商业秘密、侵犯著作权、侵犯人身权等,请点击“版权申诉”(推荐),也可以打举报电话:400-050-0827(电话支持时间:9:00-18:30)。
查看更多
高帧频视频图像预处理电路的设计与实现
24 2 Vo l.24, No.2
2009 4 ELECT RO-O PT IC T E CHNO LOG Y AP PLICA T ION April.2009
·电路与控制·
1, 2 1
曾祥萍 , 金炜东
(1., 6 10031;2., 6 10225)
:, .
、、、、、,
, .,
、、、.
:;;;
:TN941.1;TN702 :A :1673-1255(2009 )02-005 8-04
Design and Implementation of Video Preprocessing Circuits
for High-Frame Rate Image
ZENG Xiang-ping 1, 2, J IN Wei-dong1
(1.School of Information Science Technology, SouthwestJiaotong University, Chengdu 61003 1, China;
2 Center of ElectronicLab, Chengdu University of Information Technology, Chengdu 610225, China)
Abstract:In view o the problem caused by high-rame rate image sensor to analog-to-digital converter o
video image, video image preprocessing circuits are designed.T hrough several important links, such as
impedance matching, video bu er ampli ier, video DC restoration, sy nchronou s separation, synchronous clip-
ping, low -pass iltering, DC adjust ment and driver, these circuit s eliminate all kinds o noise signals produced
during gathering images, and adjust analog video image to the dy namic range requi red by analog-to-digital con-
verter.Experimental results show that the images preprocessed in these circuit s have advantages o sho rt time
delay , good quality, hig h SN R, bett er clarity and stability .
Key words:video preprocessing;high-rame rate im age;analog-to-digital conversion;circuit desig n
、、 ,
、、、、、 1 s , “”
, ,
、
[1]
. .、
,
, .
.“”,
[2]
. ,
:2009-03-16
:(C RF200816)
:(1974-), , , , ;(1959 -), , , ,
.
2 :
文档评论(0)