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公开(公告)号：KR101024104B1
公开(公告)日：2011-03-22
申请号：KR1020090110705
申请日：2009-11-17
Applicant: 서강대학교산학협력단
CPC classification number: G06T7/0002 , G06T5/40 , G06T2207/30168 , H04N17/04 , H04N19/124 , H04N19/176
Abstract: PURPOSE: A method and an apparatus for evaluating the pixel quality by partitioning a polar coordinate plane into a quantized region are provided to efficiently extract an image in an RR pixel quality evaluation method. CONSTITUTION: An original image and a deteriorate image are partitioned to a plurality of unit blocks(410). Each pixel value of the unit blocks is calculated(420). A representative image pixel difference between a horizontal direction and a vertical direction is calculated by block(430). The representative pixel value difference is transformed to the coordinate of a polar coordinate plane(440). An image quality assessment metric is calculated by using the difference between the original image and the deteriorate image(460).
Abstract translation: 目的：提供一种通过将极坐标平面划分为量化区域来评估像素质量的方法和装置，以有效地提取RR像素质量评估方法中的图像。 构成：将原始图像和恶化图像分割成多个单位块（410）。 计算单位块的每个像素值（420）。 通过块（430）计算水平方向和垂直方向之间的代表性图像像素差异。 将代表像素值差变换为极坐标平面的坐标（440）。 通过使用原始图像和恶化图像之间的差异来计算图像质量评估度量（460）。
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公开(公告)号：KR101101139B1
公开(公告)日：2012-01-05
申请号：KR1020090113282
申请日：2009-11-23
Applicant: 서강대학교산학협력단
Abstract: 본 발명은 모티브 스캔을 이용한 화질 평가방법 및 장치에 관한 것으로서, 원영상의 에지를 검출하고, 검출된 원영상의 에지를 이용하여 원영상과 및 열화 영상의 에지에 대하여 모티브 스캔을 수행한 다음, 원영상의 에지를 모티브 스캔한 결과와 열화 영상의 에지를 모티브 스캔한 결과 간의 모티브 차이값에 근거하여 화질을 평가하는 것을 특징으로 하며, 기존의 객관적인 화질 평가 방법에 의한 평가결과보다 사람이 직접 평가한 주관적인 화질평가와 더 유사하고, 평가 시간도 빠른 효과가 있다.
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公开(公告)号：KR1020110056808A
公开(公告)日：2011-05-31
申请号：KR1020090113282
申请日：2009-11-23
Applicant: 서강대학교산학협력단
Abstract: PURPOSE: A method and apparatus for assessing an image quality are provided to assess the image quality based on the differences in motif values using a motif scan. CONSTITUTION: A motive scanning unit(120) performs motif scan about an edge portion of an original image and a deteriorated image. An image quality index generator(130) compares the motif of the edge area of the original image and deteriorated image. The image quality index generating unit creates the image quality index from a motif difference value. An image quality evaluator(140) determines the average value of the combination which has maximum value through the combination of the generated image quality evaluation index by edge direction.
Abstract translation: 目的：提供一种用于评估图像质量的方法和装置，以基于使用图案扫描的图案值的差异来评估图像质量。 构成：运动扫描单元（120）执行关于原始图像的边缘部分和劣化图像的图案扫描。 图像质量指标生成器（130）将原始图像的边缘区域的图案与劣化图像进行比较。 图像质量指标生成单元从图案差值创建图像质量指标。 图像质量评估器（140）通过边缘方向上生成的图像质量评估指标的组合来确定具有最大值的组合的平均值。
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