-
公开(公告)号：KR101831247B1
公开(公告)日：2018-02-22
申请号：KR1020120010049
申请日：2012-01-31
Applicant: 한국전자통신연구원 , 동국대학교 산학협력단
Abstract: 원거리시선추적카메라의초점측정장치가제공된다. 이장치는협각카메라를이용하여눈의영상을취득하는영상취득부, 상기취득한눈의영상을다운샘플링(down sampling)하여입력영상을생성하는입력영상생성부, 상기입력영상의평균그레이레벨을학습데이터의평균그레이레벨로보정하는밝기보정부, 상기보정된입력영상을더그만마스크를이용하는초점측정방법, 강의마스크를이용하는초점측정방법, 하르웨이블릿변환방법, 및다우비시웨이블릿변환방법을각각사용하여네 개의초점값들을측정하는초점측정부, 상기측정된네 개의초점값들을각각 0 내지 1 사이의값으로비선형정규화하는정규화부, 상기정규화된네 개의초점값들을시그모이드커널함수를사용하는다층신경망을통해하나의최종초점값으로합산하는초점값합산부, 및상기최종초점값을이용하여초점렌즈를제어하는렌즈제어부를포함하며, 상기하르웨이블릿변환방법및 다우비시웨이블릿변환방법은각각네 단계스케일로초점값을계산하고상기네 단계스케일각각에서고 대역값을저 대역값으로나눈비를소정의가중치를사용하여합하여초점값을측정한다. 본발명에따르면, 보다정확한초점값을갖는위치로초점렌즈를이동시킬수 있다.
-
公开(公告)号：KR1020130088666A
公开(公告)日：2013-08-08
申请号：KR1020120010049
申请日：2012-01-31
Applicant: 한국전자통신연구원 , 동국대학교 산학협력단
CPC classification number: G06T3/4046 , G06T2207/20064 , H04N5/23212 , H04N13/383
Abstract: PURPOSE: A focus measurement apparatus of an eye tracking system using multilayer neural network is provided to assemble the capability of collecting high frequency elements in an image based on a spatial region and the capability of reducing the influence of brightness change of an image based on a wavelet region by using the multilayer neural network. CONSTITUTION: An image acquisition unit (1105) acquires an image of an eye by using a narrow angle camera. An input image generation unit (1110) generates an input image by down sampling of the image of the eye. A brightness compensation unit (1115) compensates brightness of the input image. A normalization unit (1125) normalizes four focus values measured in a focus measurement unit (1120) nonlinearly. A focus value addition unit (1130) adds up the normalized four focus values into one final focus value through multilayer neural network. A lens control unit (1135) controls a focus lens by using the final focus value. [Reference numerals] (1105) Image acquisition unit; (1110) Input image generator; (1115) Brightness compensation unit; (1120) Focus measurement; (1125) Normalization unit; (1130) Focus value addition unit; (1135) Lens controller
Abstract translation: 目的：提供一种使用多层神经网络的眼睛跟踪系统的聚焦测量装置，用于组合基于空间区域的图像中收集高频元素的能力，以及降低基于图像的图像亮度变化的影响的能力 小波域通过使用多层神经网络。 构成：图像获取单元（1105）通过使用窄角摄像机来获取眼睛的图像。 输入图像生成单元（1110）通过对眼睛的图像进行下采样来生成输入图像。 亮度补偿单元（1115）补偿输入图像的亮度。 归一化单元（1125）非线性地归一化在聚焦测量单元（1120）中测量的四个焦点值。 焦点值加法单元（1130）通过多层神经网络将归一化的四个焦点值加到一个最终聚焦值中。 透镜控制单元（1135）通过使用最终聚焦值来控制聚焦透镜。 （附图标记）（1105）图像获取单元; （1110）输入图像发生器; （1115）亮度补偿单元; （1120）聚焦测量; （1125）归一化单位; （1130）对焦值加法单位; （1135）镜头控制器
-
Search Results
2
records
(took 0.018 seconds)
