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    • 1. 发明授权
    • Apparatus for and method of embedding and extracting digital information and medium having program for carrying out the method recorded thereon
    • 用于嵌入和提取数字信息的装置和方法以及具有用于执行记录在其上的方法的程序的介质
    • US06477276B1
    • 2002-11-05
    • US09186375
    • 1998-11-05
    • Hisashi InoueShiro IwasakiMikio ShimazuShuichi OjimaTakashi KatsuraAkio MiyazakiEiichi Hatae
    • Hisashi InoueShiro IwasakiMikio ShimazuShuichi OjimaTakashi KatsuraAkio MiyazakiEiichi Hatae
    • G06K936
    • H04N19/645G06T1/005G06T2201/0051G06T2201/0052G06T2201/0061G06T2201/0065H04N1/32154H04N1/3216H04N1/32165H04N1/3217H04N1/32176H04N1/32187H04N1/32277H04N2201/3233H04N2201/327
    • An apparatus for embedding information in a signal includes a band dividing device, a block divider, a quantization portion, a signal replacement portion, a mean difference addition portion, a mean calculation portion, and a band synthesis portion. The band dividing device divides the signal into transform coefficients over a plurality of frequency bands. The block divider divides one frequency band into a plurality of blocks in accordance with a previously determined block size. The quantization portion calculates for each block, a mean value M of the transform coefficients in the block, and subjects the mean value M to linear quantization, using a previously determined quantization step-size Q to calculate a quantization value. The signal replacement portion replaces the quantization value for each block, on the basis of the quantization value and the value of the information to be embedded. The mean difference addition portion subjects the replaced quantization value, for each block, to inverse linear quantization using the quantization step-size Q to calculate a mean value M′, and adds a difference DM between the mean value M′ and the mean value M to all the transform coefficients in the block. The mean calculation portion calculates a mean value LM of the transform coefficients in the frequency band after the addition of the difference DM. The band synthesis portion reconstructs a signal in which the information has been embedded using the frequency band after the addition of the difference DM and the other frequency bands.
    • 用于在信号中嵌入信息的装置包括带分割装置,块分割器,量化部分,信号替换部分,平均差加法部分,平均计算部分和频带合成部分。 频带划分装置将信号划分成多个频带的变换系数。 块分割器根据先前确定的块大小将一个频带划分成多个块。 量化部分针对每个块计算块中的变换系数的平均值M,并使用预先确定的量化步长Q对平均值M进行线性量化,以计算量化值。 信号替换部分基于量化值和要嵌入的信息的值替换每个块的量化值。 平均差分加法部分使用量化步长Q对每个块对替换的量化值进行逆线性量化,以计算平均值M',并将平均值M'和平均值M 到块中的所有变换系数。 平均计算部分计算差DM之后的频带中的变换系数的平均值LM。 频带合成部分在添加差分DM和其他频带之后,使用频带重建信息已被嵌入的信号。
    • 2. 发明申请
    • IMAGE PROCESSING DEVICE, IMAGE PROCESSING METHOD, IMAGE PROCESSING SYSTEM, PROGRAM, STORAGE MEDIUM, AND INTEGRATED CIRCUIT
    • 图像处理装置,图像处理方法,图像处理系统,程序,存储介质和集成电路
    • US20090022396A1
    • 2009-01-22
    • US12167607
    • 2008-07-03
    • Tatsumi WATANABEShuichi Ojima
    • Tatsumi WATANABEShuichi Ojima
    • G06K9/00G06K9/40
    • G06T5/001G06K9/4633G06T7/194G06T7/507G06T7/536G06T2207/10024G06T2207/20012
    • The present invention executes color correction that improves the feeling of depth of a 2D image with ease and by using a preexisting device.Input image data is first converted into brightness information by a brightness information calculation portion. The interest level within the image is then estimated by an interest level estimation portion based on that information. The vanishing point is then estimated by a vanishing point estimation portion. Next, a depth estimation portion estimates the degree of depth based on the distance from the vanishing point to a pixel i and the interest level of the pixel i, and calculates a depth correction gain value. A corrected image, obtained by controlling a depth correction image process based on the depth correction gain value, is converted to a predetermined image format and outputted by an output portion. Accordingly, by linking an interest level based on the brightness contrast/color contrast/blurriness amount with the depth estimation based on the vanishing point, the occurrence of abnormalities felt with images that do not properly match up with the perspective structure of the vanishing point, images that do not match the visual impression of humans, and so on can be reduced, making it possible to achieve a more natural and improved feeling of depth.
    • 本发明执行颜色校正,其容易地改善2D图像的深度感并且通过使用预先存在的设备。 输入图像数据首先通过亮度信息计算部分转换为亮度信息。 然后,基于该信息,由兴趣级别估计部分估计图像内的兴趣级别。 然后消失点由消失点估计部分估计。 接下来,深度估计部分基于从消失点到像素i的距离和像素i的兴趣级别来估计深度,并且计算深度校正增益值。 通过控制基于深度校正增益值的深度校正图像处理获得的校正图像被转换为​​预定的图像格式并由输出部分输出。 因此,通过将基于亮度对比度/颜色对比度/模糊度的兴趣度与基于消失点的深度估计相关联,发现与消失点的透视结构不正确匹配的图像, 可以减少不符合人类视觉印象的图像等,使得可以实现更自然和更好的深度感。
    • 6. 发明授权
    • Image process apparatus and method for contour correction
    • 用于轮廓校正的图像处理装置和方法
    • US08107012B2
    • 2012-01-31
    • US11666892
    • 2005-11-29
    • Shuichi OjimaBunpei Toji
    • Shuichi OjimaBunpei Toji
    • H04N5/68
    • H04N5/208H04N5/142
    • The image processing apparatus 100 acquires the image signal F1 and includes a steepening amount calculation unit 110, a contour shift amount calculation unit 120, an integration correction amount calculation 130 and an image generation unit 140, which generate a corrected image signal F9 in such a way that there is an intersection between waveforms, and that there are two regions with different areas bordered by the waveforms which overlap at the intersection point, the waveforms expressing changes in each value in image spaces displayed by the image signal and the corrected image signal respectively, when a waveform which expresses changes in the differential values of the image signal relative to the image spaces is symmetrical in a contour region of the image shown by the image signal.
    • 图像处理装置100获取图像信号F1,并且包括在这样的图像信号F1中生成校正图像信号F9的倾斜量计算单元110,轮廓偏移量计算单元120,积分校正量计算130和图像生成单元140 在波形之间存在交叉的方式,并且存在两个区域,其中不同的区域由在交点处重叠的波形相邻,分别表示由图像信号显示的图像空间中的每个值的变化和校正的图像信号 当图像信号相对于图像空间的差分值的变化的波形在由图像信号所示的图像的轮廓区域中对称时。
    • 7. 发明授权
    • Image processing device, image processing method, program, storage medium and integrated circuit
    • 图像处理装置,图像处理方法,程序,存储介质和集成电路
    • US07869649B2
    • 2011-01-11
    • US11797598
    • 2007-05-04
    • Tatsumi WatanabeShuichi Ojima
    • Tatsumi WatanabeShuichi Ojima
    • G06K9/00
    • G06T5/008G06T2207/10024G06T2207/10028H04N13/122H04N2213/006
    • It is an object to perform color correction that is simple and utilizes existing devices to achieve an increase in the feeling of depth in 2D images. Input image data are transformed into predetermined color information by a color information calculation portion 11. A correction amount control portion 10 determines a correction gain value for the color information according to depth information that has been input. A color information correction portion 12 performs color information correction based on the correction amount due to the contrast between the color information of a target pixel and representative color information of the surrounding region, and the correction gain value of the correction amount control portion. An output portion 13 converts this into a predetermined image format and outputs the result. Thus, by correcting the color information based on the contrast effect in conjunction with the depth information of the foreground and the background, for example, it is possible to easily increase the feeling of depth in a 2D image. Moreover, by controlling the color contrast effect with the depth information when performing the color correction, it becomes possible to more easily give a sense of depth that is perceived by humans.
    • 本发明的目的是进行简单的颜色校正,并利用现有的装置来实现2D图像中深度感的增加。 输入图像数据由颜色信息计算部分11转换成预定的颜色信息。校正量控制部分10根据输入的深度信息确定颜色信息的校正增益值。 颜色信息校正部分12由于目标像素的颜色信息和周围区域的代表性颜色信息之间的对比度以及校正量控制部分的校正增益值,基于校正量执行颜色信息校正。 输出部分13将其转换成预定的图像格式并输出结果。 因此,通过结合前景和背景的深度信息,通过校正基于对比度效果的颜色信息,例如,可以容易地增加2D图像中的深度感。 此外,通过在进行颜色校正时通过控制与深度信息的颜色对比度效果,可以更容易地给人感觉到的深度感。
    • 8. 发明申请
    • Color Adjustment Device and Method
    • 颜色调整装置及方法
    • US20090009525A1
    • 2009-01-08
    • US11791725
    • 2005-11-28
    • Tsuyoshi HirashimaShuichi OjimaJun IkedaRyouta HataShinya Kiuchi
    • Tsuyoshi HirashimaShuichi OjimaJun IkedaRyouta HataShinya Kiuchi
    • G09G5/02
    • H04N1/62H04N1/628H04N9/643H04N9/646
    • A color adjustment device (100) comprises an image characteristic amount acquiring unit (10), a specific-color-area determination unit (20), and a color compensation unit (30). The image characteristic amount acquiring unit (10) acquires the image characteristic amount of an input image from the average luminance or additional information of the input image. The specific-color-area determination unit (20) determines a specific color area based on the image characteristic amount. With reference to the specific color area, the color compensation unit (30) calculates the degree of similarity of the input color of the input image to the specific color, and performs the color adjustment of the input color of the input image with respect to at least one specific color. The area of the input image which is comparatively wide and possesses a color of the same system as the specific color is not wrongly recognized as the area of the specific color.
    • 颜色调整装置(100)包括图像特征量获取单元(10),特定颜色区域确定单元(20)和颜色补偿单元(30)。 图像特征量获取单元(10)从输入图像的平均亮度或附加信息获取输入图像的图像特征量。 特定颜色区域确定单元(20)基于图像特征量确定特定颜色区域。 参照特定的颜色区域,颜色补偿单元(30)计算输入图像的输入颜色与特定颜色的相似度,并且对输入图像的输入颜色进行颜色调整 至少一种特定的颜色。 相对较宽且具有与特定颜色相同系统的颜色的输入图像的区域未被错误地识别为特定颜色的区域。
    • 10. 发明申请
    • Image processing device, image processing method, program, storage medium and integrated circuit
    • 图像处理装置,图像处理方法,程序,存储介质和集成电路
    • US20070262985A1
    • 2007-11-15
    • US11797598
    • 2007-05-04
    • Tatsumi WatanabeShuichi Ojima
    • Tatsumi WatanabeShuichi Ojima
    • G06T17/00
    • G06T5/008G06T2207/10024G06T2207/10028H04N13/122H04N2213/006
    • It is an object to perform color correction that is simple and utilizes existing devices to achieve an increase in the feeling of depth in 2D images. Input image data are transformed into predetermined color information by a color information calculation portion 11. A correction amount control portion 10 determines a correction gain value for the color information according to depth information that has been input. A color information correction portion 12 performs color information correction based on the correction amount due to the contrast between the color information of a target pixel and representative color information of the surrounding region, and the correction gain value of the correction amount control portion. An output portion 13 converts this into a predetermined image format and outputs the result. Thus, by correcting the color information based on the contrast effect in conjunction with the depth information of the foreground and the background, for example, it is possible to easily increase the feeling of depth in a 2D image. Moreover, by controlling the color contrast effect with the depth information when performing the color correction, it becomes possible to more easily give a sense of depth that is perceived by humans.
    • 本发明的目的是进行简单的颜色校正,并利用现有的装置来实现2D图像中深度感的增加。 输入图像数据由颜色信息计算部分11转换成预定的颜色信息。校正量控制部分10根据输入的深度信息确定颜色信息的校正增益值。 颜色信息校正部分12由于目标像素的颜色信息和周围区域的代表性颜色信息之间的对比度以及校正量控制部分的校正增益值,基于校正量执行颜色信息校正。 输出部分13将其转换成预定的图像格式并输出结果。 因此,通过结合前景和背景的深度信息,通过校正基于对比度效果的颜色信息,例如,可以容易地增加2D图像中的深度感。 此外,通过在进行颜色校正时通过控制与深度信息的颜色对比度效果,可以更容易地给人感觉到的深度感。