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    • 2. 发明授权
    • Image processing apparatus and method, and storage medium
    • 图像处理装置和方法以及存储介质
    • US08538091B2
    • 2013-09-17
    • US12147123
    • 2008-06-26
    • Yuji KanedaKatsuhiko MoriHiroshi Sato
    • Yuji KanedaKatsuhiko MoriHiroshi Sato
    • G06K9/00
    • G06K9/00845G06K9/00315G06K9/0061G06K9/4628
    • An image-processing apparatus for executing accurate facial expression recognition even for a subject hard to recognize a facial expression is provided. A person's face region is extracted from an image input from an image input unit. A predetermined partial region that changes between when the facial expression is in the first and second states is extracted from the extracted face region. A facial expression evaluation value is calculated using an evaluation value calculation formula. When the calculated facial expression evaluation value exceeds a threshold value, it is determined that the facial expression is in the second state. If the difference between the maximum value and the minimum value of the calculated facial expression evaluation value within a predetermined time is smaller than a predetermined value, the evaluation value calculation formula or its parameter is changed to increase the difference.
    • 提供了即使对于难以识别面部表情的对象也执行准确的面部表情识别的图像处理装置。 从图像输入单元输入的图像中提取人脸区域。 从所提取的面部区域中提取在面部表情处于第一状态和第二状态之间时的变化的预定部分区域。 使用评价值计算公式计算面部表情评价值。 当所计算的面部表情评估值超过阈值时,确定面部表情处于第二状态。 如果计算出的面部表情评估值的最大值与最小值之间的差在预定时间内小于预定值,则改变评估值计算公式或其参数以增加差异。
    • 10. 发明申请
    • IMAGE CONVERSION METHOD AND APPARATUS, AND PATTERN IDENTIFICATION METHOD AND APPARATUS
    • 图像转换方法和装置,以及图案识别方法和装置
    • US20100329556A1
    • 2010-12-30
    • US12819003
    • 2010-06-18
    • Yusuke MitaraiMasakazu MatsuguKatsuhiko Mori
    • Yusuke MitaraiMasakazu MatsuguKatsuhiko Mori
    • G06K9/62G06K9/00
    • G06K9/38G06K9/6251
    • In an image conversion method, a value which reflects the mutual relationship between the classes of pixel patterns each formed from a pixel classified as one of a plurality of classes and peripheral pixels is set as a converted value corresponding to each of the plurality of classes, a pixel of interest is sequentially selected from the input image, and a pixel pattern formed from the selected pixel of interest and a predetermined number of pixels around it is classified as one of the plurality of classes in accordance with a neighboring pattern obtained based on the relationship between the value of the pixel of interest and the values of peripheral pixels located at predetermined relative positions with respect to the pixel of interest. The value of the pixel of interest is converted into a converted value set for a class to which the pixel of interest has been classified.
    • 在图像转换方法中,反映从分类为多个类别和周边像素之一的像素形成的像素图案的类别之间的相互关系的值被设置为与多个类别中的每一个对应的转换值, 从输入图像顺序选择感兴趣的像素,并且根据所选择的感兴趣像素形成的像素图案和其周围的预定数量的像素被分类为根据基于 感兴趣像素的值与位于相对于感兴趣像素的预定相对位置的周边像素的值之间的关系。 感兴趣像素的值被转换为对感兴趣的像素已被分类的类的转换值集合。