手机彩票网

欢迎光临深圳市赛麦吉图像技术有限手机彩票网网站!本手机彩票网经营范围包括摄像头镜头测试图卡影像测试图卡,均可定制!

中文站|

全国服务热线:400-666-2522

增加清晰度测试可重复性的五个方法

浏览: 手机彩票网日期:2018-01-05

YIZHIXINGSHICHENGGONGDETUXIANGZHILIANGCESHIDEJIBENFANGMIAN。XITONGZHONGDEMEIGEZUJIANDOUKENENGHUIYINGXIANGCESHIJIEGUODEBIANHUA。DUIYUTONGGUO/SHIBAICESHIDENGRENWU,ZHUYAOMUBIAOSHISHIBIEYOUYUZUJIANZAOCHENGDEBIANHUABINGHULVEYOUYUZAOSHENGYINQIDEBIANHUA。NENGGOUZHUNQUEDIFUZHICESHIJIEGUO,BIANYIXINGXIANZHIZAI1-5%,KEYIGENGZHUNQUEDIMIAOSHUCHANPINDEXINGNENG。

YOUYUImatestZHIJIECONGTUXIANGXIANGSUJINXINGCELIANG,YINCIRENHEDUITUXIANGTIANJIAZAODIANDESHOUJICAIPIAOWANGDOUHUIYINGXIANGCELIANGJIEGUO。TUXIANGZHONGZAOSHENGDEZHUYAOSHOUJICAIPIAOWANGSHIDIANZICHUANGANQIZAOSHENG。ZAIRUOGUANGQINGKUANGXIA,GUANGZISANLIZAOSHENGYEYOUXIANZHUYINGXIANG。

WEILEJIANSHAORUIDUJIEGUODEBIANHUABINGTIGAOCESHIDEZHONGFUXING,NINYINGGAICAIQUCUOSHIJIANSHAOTUXIANGZHONGDEZAODIAN。

ZHEILIYOU5GEJIQIAOLAIXIANZHICESHIJIEGUOZHONGDEZAOSHENG:

最大化您的样品

YOUYUDADUOSHUZAOSHENGYUANZAIPUGUANGZHONGDEBUTONGPUGUANGHEXIANGSUWEIZHIDOUSHIDULIDE,YINCIKEYITONGGUOPINGJUNDUOGEYANGBENLAIYOUXIAODIXIAOCHUTAMENDEYINGXIANG。

WEILELIYONGZAOSHENGDESHIJIANFANGMIAN,DANGSHIYONGImatestDEGUDINGMOKUAIXUANZEDUOGETUXIANGWENJIANJINXINGFENXISHI,KEYISHIYONG“ZUHEWENJIANJINXINGXINHAOPINGJUN”XUANXIANGHEBINGTONGYICHANGJINGDEDUOGETUXIANG。ZHEIGEJIQIAOSHIYONGYUImatestDESUOYOUFENXI。

LEISIDI,DUIYUJIYUBILIBUBIANDEGANXINGQUQUYU(ROI)DEFENXI,LIRUYOUXUANDEMTFCELIANGQINGXIEBIANYUANJISHU,ZENGJIAZAITUXIANGZHONGFENXIDEQINGXIEBIANYUANZHOUWEIDEROIDEMIANJIZENGJIALEDULISUIJISHIYONGDEYANGPIN。YIBANLAISHUO,NINXIWANGZAITUBIAOZHONGXUANZEJINKENENGDADEYIGECHUANGKOUZHOUWEIDEQINGXIEBIANYUAN,BINGBAOLIUZAITUXIANGZIDUANDESUOXUQUYUNEI(YINWEIMTFTONGCHANGZAIZIDUANZHOUWEIBIANHUA)。ZHEIGEJIQIAOBUSHIYONGYUTUXIANGZHONGJUYOUGUDINGTEZHENGCHICUNDECESHI,RUXIMENZIXINGHESHUANGQUXIANXIE。

通过图表对比确保足够的信号水平(但不要太多)

DUIYURUIDUCELIANG,NINYAOCELIANGDEXINHAOYUTUXIANGZHONGDEDUIBIDUYOUGUAN。DUIBIDUYUEGAO,XINZAOBI(SNR)YUEGAO,ZAOYINDUIJIEGUODEYINGXIANGYUEXIAO。RANER,KENENGYOUTAIDUOHAODONGXI:DANGCHUANGANQIZHONGDEXIANGSUDADAOBAOHEDIAN,XUEBODIANHUOFEIXIANXINGXIANGYINGQUYUSHI,HUICHUXIANBUQIESHIJIDERUIDUZENGJIA。ISO 12233:2014BIAOZHUNZHIDINGYI4:1DUIBIDUDAYINDECESHITUBIANYUAN,YIFANGZHIDADUOSHUXITONGCHUXIANBAOHE。

QINGXIEDEBIANYUANXINHAODIANPINGYUBIANYUANDEMINGANBIANDUIBIDUMIQIEXIANGGUAN。WEILEHUODEKEKAODEJIEGUO,NINYINGGAICHANGSHISHIXIANQINGXIEBIANYUANDEZUIJIADUIBIDUFANWEI。ZHEIBUFENSHEJIXUANZESHIHENINDECESHISHEZHIDETUBIAO。

ZENGJIAYINYINGYINGXIANGZUIDADECESHITUDEWAIBUQUYUDEDUIBIDUSHIZENGJIAXINHAODIANPINGDEYIZHONGJISHU。CONGImatestDINGGOUTUBIAOSHI,KEYIGENJUXUYAOQINGQIUZIDINGYI。

请注意处理图像的效果

YIXIESHIYONGImatestJINXINGCESHIDESHEBEIKEYISHENGCHENGBUZHUOHOUWEIBEIRUANJIANCHULIDEYUANSHITUXIANG。ZAIZHEIZHONGQINGKUANGXIA,ImatestKEYITIGONGJINGTOUHECHUANGANQIZUHEXITONGDEJINGQUECELIANG。MEIDANGZHAOXIANGJISHEBEIZAISHURUJIImatestZHIQIANCHULITUXIANGSHI,KEYIGUANCHA,YANJIUHELIJIEGAICHULIDEXIAOGUO,DANSHIBUNENGBEIHULVE。

DANGTUXIANGCONGJIAOGAOWEISHENCHUANGANQIZHUANHUANWEI8WEI(24WEICAISE)JPEGSHI,YOUYULIANGHUA,ZAOSHENGHUISHAOWEIZENGJIA。RUGUOXUYAOGUANGFANDETUXIANGCHULI(SHANBIHEKELU),ZEZAOSHENGZENGJIAKENENGHUIGENGZAO(KENENGCHUXIAN“TIAODAIHUA”)。TONGCHANGZUIHAOZHUANHUANWEI16WEI(48WEIYANSE)WENJIAN。CHULIHAIJINGCHANGBAOKUORUIHUA,ZHEIKEYIZAIJIAOGAOPINLVXIAZENGJIAZAOSHENGDEXIANGDUIGONGLV。

CHULITUXIANGDEZUIHOUYIGEJINGGAOSHI,XUDUOXIAOFEILEIXIANGJI(TEBIESHIYIDONGSHEBEIXIANGJI)SHIYONGFEIXIANXINGJIANGZAO(RUSHUANGBIANLVBO),ZHEIKEYIXIAOCHUQINGXIEBIANYUANMUBIAOSHANGDETUXIANGZAOSHENG,DANYEJIANSHAOWENLIXIJIE。(ZHUYI:DANGSHEJIDAOZHEIYANGDEFEIXIANXINGCHULISHI,RUSHANGSUOSHUDUIDUOGETUXIANGQIUPINGJUNZHIJIANGBUQIZUOYONG)。ZAIZHEIZHONGQINGKUANGXIA,QINGXIEDEBIANYUANCELIANGKENENGWUFAGAOSUZHENGGERUIDUDEGUSHI,ERSUIJI(WENLIFENXI)TUKENENGGENGHESHI。

确保更好的曝光

JIAODIDEGUANGZHAOHUANJINGTONGCHANGXUYAOGENGGAODEISOGANGUANGDU,YIHUODELIANGHAODEPUGUANG,CONGERDAOZHICHUANGANQIZAOYINHEBIANHUAZENGJIA。QUEBAOLIANGHAODEZHAOXIANGPUGUANGKEYIJIANSHAOGUANGZISANLIZAOSHENGHETUXIANGZHONGCHUANGANQIZAOSHENGDEXIANGDUIYINGXIANG。TIGAOPUGUANGZHIDELIANGZHONGZHUYAOFANGFA(JINGUANYAOXIAOXINBAOCHIGUANGXIANQUYUDIYUCHUANGANQIDEBAOHEDU,RUSHANGSUOSHU):

  1. 通过增加光源的亮度来增加图表反射的光量
  2. 只要照相机和目标都是静止的,就增加曝光时间以聚集更多光线

选择一个可重复的测量

MTFQUXIANDEXINGZHUANGZAIYOUZAOSHENGDEQINGKUANGXIAHUISHOUDAOGANRAO。BIJIAOLIANGGEWANZHENGDEMTFQUXIANHUOZAIBAOGAOZHONGJIARUYITIAOQUXIANTONGCHANGSHIBUQIESHIJIDE,SUOYIGONGCHENGSHITONGCHANGHUIJIANGGUANYUQUXIANDEXINXIJIANSHAOWEIYIGEHUOLIANGGEZONGJIEZHIBIAO。ZHEIXIESHIWEILEZAIDANGESHUZIZHONGCHUANDAGUANYUQUXIANDEZUIZHONGYAODEXINXI。CHANGJIANDELIZISHI:

  • MTF10 ,MTF30 和MTF50 :MTF曲线分别达到其归一化(DC)值的10%,30%和50%的频率值
  • MTF50P :MTF曲线达到其最大值的50 倍的频率值(如果存在锐化,则可以大于在DC中找到的值1)
  • 在1/4和1/2奈奎斯特时的MTF:在奈奎斯特采样速率的一半和四分之一处的MTF值(分别为0.125和0.25个周期/像素)。
  • MTF面积:从DC到0.5个周期/像素的MTF曲线下的面积,通常曲线归一化到峰值为1(不太常见)。

XIAMIANYIHECHENGDEWUZAOSHENGMTFQUXIANWEILIJINXINGSHUOMING。MTFMIANJIZHISHIQUXIANXIAMIANQIANHONGSEQUYUDEJIFEN。

MTF曲线

MEIYIGEBUTONGDEZAOSHENGSHIXIAN(JIMEIZHANGZHAOPIANDEQINGXIEBIANYUAN),ZHEIXIEDULIANGZHIDEZHIDOUHUIYOUSUOBIANHUA,DANSHIZAIZAOSHENGCUNZAIDEQINGKUANGXIA,YIXIEDULIANGZHIWANGWANGBUTAIWENDING(JUYOUGENGDUODEFANGCHA)。QUEBAOSHIYONGTIXIANNINSUOGUANXINDEMTFTEXINGDEZHIBIAOSHIFEICHANGZHONGYAODE,DANKAOLVDAONINKENENGYUDAODEZAOYINLIANGYESHIKEZHONGFUDE。

XIAMIANXIANSHIDESHIYIZU10GEBUTONGDEMTFQUXIAN(SHIYONGImatestDESFRMOKUAI)CONGYIZUMONIDEQINGXIEBIANYUANTUXIANGZHONGJISUANCHULAIDE。WOMENDEFANGZHENGUOCHENGBAOKUOCHANSHENG5DUQINGXIEDEBIANYUAN(SHUANGXIANXINGCHAZHI),YINGYONGGAOSIMOHUHE,TIANJIAGAOSIBAISEXIANGSUZAOSHENG(XIAMIANDEMEITIAOQUXIANDEBUTONGSHILI)YIJISHIYONGBURUIHUAYANMOJISHUYINGYONGRUIHUA。ZAIMTFQUXIANZUSHANGZHONGDIEDESHIYUBUTONGZONGJIEDULIANGXIANGDUIYINGDEXIANGXINGTU(JIANJIEDIBIAOSHIZHENGGERENKOUDEZHONGYAOTONGJISHUJU,ZAIZHEIZHONGQINGKUANGXIA,SHIYONGSHANGSHUGUOCHENGDE100CIMONI)。

重复性

ZHEIXIETAOLUNKUANGZHONGZUIZHONGYAODEFANGMIANSHITAMENMEIGEDEZHANGDU,TABIAOSHIMEIGEDULIANGZAIZAOSHENGBIANYUANTUXIANGDEZONGTISHANGXIANSHIDUOSHAOCHAYI。(CHUIZHIFANGXIANGDULIANGDEZHANGDUYIJINGZAIGAITUXIANGZHONGDEBUTONGZHOUBILISHANGJINXINGLEBUCHANG,YIYUNXUYUSHUIPINGHUIZHIDEZHANGDUJINXINGSHIJUEBIJIAO。)ZHUYI,MTF50HEMTF50PJUYOUBIXIANGSIDECHANGJIANMTF30,MTF10GENGXIAODEFANGCHALIANG。1/2HE1/4NAIKUISITEDEMTFDEBIANHUAGUIMOBUTONG,YINWEITAMENDEDANWEIBIQIANMIANTIDAODEZHIBIAOYOUSUOBUTONG,HOUZHESHOUDAODEZAOYINYINGXIANGGENGDA。MTFQUYUJUYOUZUIXIAODEBIANHUA,JINGUANZHEIYESHIBUTONGDEGUIMO,BINGQIEYURUIDUYOUBUTONGDEGUANXI。(WOMENJIANGYANJIUMTF AreaDESHIYONGXING,ZHEISHIYIGEFEICHANGYOUXIWANGDANBUCHANGYONGDEZHIBIAO,

XIAMIANDETUJINYIBUXIANSHILEBUTONGDEMTFDULIANGZAIBUTONGDERUIHUAHEZAOSHENGSHUIPINGXIASHIRUHEBIANHUADE。ZAIMEIGEZAOSHENGSHUIPINGSHANGDEMEIGEDULIANGSHANGJISUANMEIGEDULIANGDEBIAOZHUNPIANCHAσ DULIANG,CHAOGUO100GESUIJISHILI。YUANSHIDEMONIQINGXIEBIANYUANCESHITUXIANGZAI[0,255]HE4:1DUIBIDUZHIJIANBEIGUZHI。

没有锐化线图

中等锐化折线图强锐化线图

YISHANGSHUJUXIANSHILESUOYOUZHIBIAODEBIANHUAXINGZENGJIADEYUQIZONGQUSHI,BAOKUOZAOSHENGZENGJIAHERUIHUASHUIPINGBUDUANTIGAO。YOUQUDESHI,GEZHONGZAOSHENGHERUIHUASHUIPINGDEBIANHUADEZHIPAIXUJIBENBUBIAN。LINGYIGEZHIDEZHUYIDEWENTISHI,ZAINAIKUISITE1/2DEMTF10HEMTFDUIRUIHUATEBIEMINGAN - DANGYINGYONGRUIHUASHI,TAMENDEBIANHUAXINGTIAODONGZUIDA。ZHEILIANGGEZHIBIAOTONGCHANGYESHIZHENGTISHANGBIANHUAZUIDADE,ERMTFQUYUSHIZUIYIZHIDE。

DANGXUANZEYONGYUBAOGAOCHENGXIANGXITONGDEQINGXIDUDEDULIANGSHI,ZHONGYAODESHIYAOJIZHUYISHOUYINGXIANGDEBAOGAOZHIYOUYUSUIJIZAOSHENGERBIANHUA。TONGGUOSHIYONGGENGWENDINGDEHUIZONGDULIANGBIAOZHUNZHI,KEYIQUEBAOJIANGLAICESHIZHONGJIEGUODEKEZHONGFUXING。

深圳市赛麦吉图像技术有限手机彩票网致力于以先进的技术为用户提供优质的产品和服务。您可以通过电话联系我们:400-666-2522 或访问我们的官网:hmmp8.com

  • 上一篇:MTF常见单位
  • 下一篇:宽动态技术
  • Copyright © 1998-2020 深圳市赛麦吉图像技术有限手机彩票网版权所有
    全国服务热线:400-666-2522   站长销售QQ:
    手机彩票网地址:深圳市宝安区石岩街道塘头一号路创维创新谷5B栋6楼 备案号:

    ZIXUNDIANHUA

    400-666-2522