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    • 97. 发明授权
    • Image displaying device and method and image processing device and method for preventing image deterioration due to motion-compensated rate conversion processing
    • 用于防止运动补偿速率转换处理造成的图像劣化的图像显示装置和方法以及图像处理装置和方法
    • US08325272B2
    • 2012-12-04
    • US12440654
    • 2007-04-10
    • Takeshi MoriSeiji KohashikawaHiroyuki FurukawaMasafumi UenoKenichiroh YamamotoTakashi Yoshii
    • Takeshi MoriSeiji KohashikawaHiroyuki FurukawaMasafumi UenoKenichiroh YamamotoTakashi Yoshii
    • H04N5/08H04N7/12
    • G09G3/20G09G3/3611G09G5/393G09G2320/0261G09G2320/106G09G2340/0435G09G2340/16H04N7/0112H04N7/0132H04N7/014H04N7/0147
    • It is an object to prevent the image quality deterioration of a moving image likely to include a plurality of the same consecutive images such as 2-3 or 2-2 pulldown video due to the motion-compensated frame rate conversion (FRC) processing. An image displaying device is provided with an FRC portion (10) for converting the number of frames in an input image signal by interpolating an image signal to which a motion compensation processing has been given between the frames in the input image signal, a pulldown detecting portion (14) for detecting whether the input image signal is an image signal to which pulldown conversion has been performed, and a controlling portion (15). The FRC portion (10) includes a motion vector detecting portion (11e) for detecting a motion vector between the frames of the input image signal, an interpolating vector evaluating portion (11f) for allocating an interpolating vector between the frames based on the motion vector information, and an interpolating frame generating portion (12d) for generating an interpolating frame from the interpolating vector. In the case that the input image signal is an image signal to which pulldown conversion has been performed, the controlling portion (15) set the motion vector detected by the motion vector detecting portion (11e) to zero-vector to make the motion compensation processing of the FRC portion (10) ineffective.
    • 本发明的目的是防止由于运动补偿帧速率转换(FRC)处理,运动图像的图像质量劣化可能包括多个相同的连续图像,例如2-3或2-2下拉视频。 图像显示装置设置有FRC部分(10),用于通过内插在输入图像信号中的帧之间已经给出运动补偿处理的图像信号来转换输入图像信号中的帧数,下拉检测 用于检测所述输入图像信号是否已经执行了下拉变换的图像信号的部分(14)和控制部分(15)。 FRC部分(10)包括用于检测输入图像信号的帧之间的运动矢量的运动矢量检测部分(11e),用于基于运动矢量来分配帧之间的内插矢量的内插矢量评估部分(11f) 信息,以及用于从内插向量生成内插帧的内插帧生成部分(12d)。 在输入图像信号是已经执行了下拉变换的图像信号的情况下,控制部分(15)将由运动矢量检测部分(11e)检测的运动矢量设置为零向量,以进行运动补偿处理 的FRC部分(10)无效。