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    • 2. 发明公开
    • METHOD AND SYSTEM FOR WHITE BALANCING IMAGES USING FACIAL COLOR AS A REFERENCE SIGNAL
    • 方法和装置进行白平衡的图像在脸上的油彩仅供参考信号
    • EP1518417A1
    • 2005-03-30
    • EP03735917.1
    • 2003-06-16
    • Koninklijke Philips Electronics N.V.
    • LIN, Yun-Ting
    • H04N9/73
    • H04N9/735
    • A system for white balancing images using facial color as a reference signal is provided that includes a face detector, a skin tone extractor, a plurality of reference skin tones, a skin tone comparator, and a balance parameter generator. The face detector is operable to receive a digital image and to detect a human face within the digital image. The skin tone extractor is coupled to the face detector. The skin tone extractor is operable to extract a skin tone from the digital image. The extracted skin tone is associated with a human face detected by the face detector. The skin tone comparator is coupled to the skin tone extractor. The skin tone comparator is operable to access the reference skin tones and to compare the extracted skin tone to the reference skin tones in order to identify a reference skin tone corresponding to the extracted skin tone. The balance parameter generator is coupled to the skin tone comparator. The balance parameter generator is operable to generate a balance parameter based on the extracted skin tone and the corresponding reference skin tone. The balance parameter is operable to be applied to the digital image to white balance the digital image.
    • 3. 发明公开
    • METHOD AND APPARATUS FOR CORRECTING A HEAD POSE IN A VIDEO PHONE IMAGE
    • VERFAHREN UNDGERÄTZUR KORREKTUR EINER KOPFHALTUNG IN EINEM VIDEOTELEFONBILD
    • EP1573674A2
    • 2005-09-14
    • EP03777046.8
    • 2003-12-08
    • Koninklijke Philips Electronics N.V.
    • LEE, Mi-SuenLIN, Yun-TingTRAJKOVIC, MiroslavPHILOMIN, Vasanth
    • G06T7/00
    • G06K9/00228G06T7/579G06T7/75G06T17/00G06T2200/08H04N7/147
    • An image processing system (250) and method (300) are disclosed for correcting a head pose in a video phone image, so that a frontal view is presented on a display. A disclosed head pose corrector (250) estimates the orientation of a head pose and adjusts the orientation of the head pose, if necessary, to present a frontal view. The orientation of the head pose is adjusted by generating a three dimensional model of the face surface and adjusting the orientation of the three dimensional face model to provide the desired frontal view. The head pose corrector (250) may be included in a video phone (100) to correct the head pose of transmitted or received images (or both) or may be included in a server on a network to automatically adjust the head shots of one or more participants to a video phone communication.
    • 公开了一种用于校正视频电话图像中的头部姿势的图像处理系统(250)和方法(300),从而在显示器上呈现正视图。 公开的头部姿态校正器(250)估计头部姿势的方向并且如果需要的话调整头部姿势的方向以呈现正视图。 通过产生面部表面的三维模型并调整三维面部模型的取向来调整头部姿态的方位以提供所需的正面视图。 头部姿势校正器(250)可以被包括在视频电话(100)中以校正发送或接收的图像(或两者)的头部姿势,或者可以包括在网络上的服务器中,以自动调整一个或 更多参与者进行视频电话交流。