Apparatus and method for image processing and storage medium for the same
    1.
    发明申请
    Apparatus and method for image processing and storage medium for the same 有权
    用于图像处理和存储介质的装置和方法

    公开(公告)号:US20050238231A1

    公开(公告)日:2005-10-27

    申请号:US11165710

    申请日:2005-06-24

    摘要: An apparatus and a method as well as a storage device of the present invention transform intensity levels with consideration of both features of the intensity levels in an input image and human visual characteristics, wherein the present invention includes the steps of inputting wider dynamic range digital image data, generating a histogram of intensity levels of the image data, generating a histogram equalization LUT by cumulating the histogram, generating a visual characteristics LUT with reference to the histogram equalization LUT, generating a combined LUT by combining the histogram equalization LUT and the visual characteristics LUT, and correcting the image data.

    摘要翻译: 本发明的装置和方法以及存储装置考虑输入图像中的强度级别和人类视觉特征两者的特征来变换强度水平,其中本发明包括以下步骤:输入更宽的动态范围数字图像 数据,生成图像数据的强度级别的直方图,通过累积直方图生成直方图均衡LUT,参考直方图均衡LUT生成视觉特征LUT,通过组合直方图均衡LUT和视觉特征来生成组合LUT LUT,并且校正图像数据。

    Image processing apparatus and method, and recording medium therefor
    2.
    发明授权
    Image processing apparatus and method, and recording medium therefor 失效
    图像处理装置和方法及其记录介质

    公开(公告)号:US06781595B2

    公开(公告)日:2004-08-24

    申请号:US10035711

    申请日:2001-10-22

    IPC分类号: G09G502

    摘要: An image processing apparatus and method and a recording medium therefor control the occurrence of a change in a hue. The histogram of a luminance signal Y is generated in a first step S1. In a second step S2, the histograms of the luminance signals Y are accumulated to generate a cumulative histogram, and the cumulative histogram is subjected to logarithmic approximation thereby to generate a lookup table (LUT) for correcting luminance signals. In a third step S3, a color-difference signal correction parameter LUT is generated by referring to the LUT for correcting luminance signals. In a fourth step S4, an input luminance signal Y is applied to the LUT for correcting luminance signals thereby to acquire a corrected luminance signal Y0. In a fifth step S5, the input luminance signal Y is applied to a color-difference signal correction parameter LUT so as to acquire a correction parameter k. In a sixth step S6, input color-difference signals Cr and Cb are multiplied by the correction parameter k to acquire corrected color-difference signals Cr0 and Cb0.

    摘要翻译: 一种图像处理装置和方法及其记录介质,用于控制色相变化的发生。 在第一步骤S1中生成亮度信号Y的直方图。 在第二步骤S2中,累积亮度信号Y的直方图以生成累积直方图,并对累积直方图进行对数近似,从而生成用于校正亮度信号的查找表(LUT)。 在第三步骤S3中,通过参考用于校正亮度信号的LUT来生成色差信号校正参数LUT。 在第四步骤S4中,输入亮度信号Y被施加到用于校正亮度信号的LUT,从而获得校正的亮度信号Y0。 在第五步骤S5中,将输入亮度信号Y施加到色差信号校正参数LUT,以获得校正参数k。 在第六步骤S6中,输入色差信号Cr和Cb与校正参数k相乘以获得校正色差信号Cr0和Cb0。

    Apparatus and method for image processing and storage medium for the same
    3.
    发明授权
    Apparatus and method for image processing and storage medium for the same 有权
    用于图像处理和存储介质的装置和方法

    公开(公告)号:US07227992B2

    公开(公告)日:2007-06-05

    申请号:US11165710

    申请日:2005-06-24

    IPC分类号: G06K9/00

    摘要: An apparatus and a method as well as a storage device of the present invention transform intensity levels with consideration of both features of the intensity levels in an input image and human visual characteristics, wherein the present invention includes the steps of inputting wider dynamic range digital image data, generating a histogram of intensity levels of the image data, generating a histogram equalization LUT by cumulating the histogram, generating a visual characteristics LUT with reference to the histogram equalization LUT, generating a combined LUT by combining the histogram equalization LUT and the visual characteristics LUT, and correcting the image data.

    摘要翻译: 本发明的装置和方法以及存储装置考虑输入图像中的强度级别和人类视觉特征两者的特征来变换强度水平,其中本发明包括以下步骤:输入更宽的动态范围数字图像 数据,生成图像数据的强度级别的直方图,通过累积直方图生成直方图均衡LUT,参考直方图均衡LUT生成视觉特征LUT,通过组合直方图均衡LUT和视觉特征来生成组合LUT LUT,并且校正图像数据。

    Digital still camera and image data processor
    5.
    发明授权
    Digital still camera and image data processor 失效
    数码相机和图像数据处理器

    公开(公告)号:US06570925B1

    公开(公告)日:2003-05-27

    申请号:US09371102

    申请日:1999-08-10

    申请人: Chikako Sano

    发明人: Chikako Sano

    IPC分类号: H04N712

    CPC分类号: H04N1/646 H04N2101/00

    摘要: The invention relates to an image data expansion processor for digital still camera. Two blocks of 8-bit luminance data and one block of 8-bit color difference data are repeatedly output from a compressing/expanding unit in the above order and are supplied to a buffer memory. Two blocks of 16-bit data to be written are generated corresponding to the two blocks of 8-bit luminance data and one block of 8-bit color difference data, are sequentially supplied from the buffer memory to a frame memory in units of block and are written to the frame memory. Each of luminance data and color difference data is not written to the frame memory in units of block but 16-bit data to be written composed of these luminance data and color difference data is written to the frame memory in units of block. The number of blocks written to the frame memory can be reduced and total time required for switching an address in the direction of lines can be reduced.

    摘要翻译: 本发明涉及一种用于数码相机的图像数据扩展处理器。 按照上述顺序从压缩/扩展单元重复输出两个8位亮度数据块和一个8位色差数据块,并被提供给缓冲存储器。 对应于8位亮度数据的两个块和8位色差数据的一个块,生成要写入的两个16位数据块,以块为单位从缓冲存储器顺序提供给帧存储器, 被写入帧存储器。 每个亮度数据和色差数据不以块为单位写入帧存储器,而是要由这些亮度数据构成的要写入的16位数据并且色差数据以块为单位写入帧存储器。 可以减少写入帧存储器的块的数量,并且可以减少在行方向上切换地址所需的总时间。

    Image data processing method, image data processing apparatus and digital still camera
    6.
    发明授权
    Image data processing method, image data processing apparatus and digital still camera 失效
    图像数据处理方法,图像数据处理装置和数码相机

    公开(公告)号:US07463291B2

    公开(公告)日:2008-12-09

    申请号:US11075453

    申请日:2005-03-09

    申请人: Chikako Sano

    发明人: Chikako Sano

    CPC分类号: H04N19/60 H04N19/85

    摘要: This invention relates to an image data processing method or the like capable of obtaining a preferable reproduction image based on processed image data even if the image data is short of the unit of block on reading the image data from the memory means in the unit of block. When image data of “M lines×N pixels” written in a memory is read in a unit of block consisting of the predetermined number of pixels and the read image data is subjected to a compression coding process or the like, if data of two lines and data of four pixels per line are short, data of two pixels per line is added to the left end side of the image by using data (1,1) (2,1) . . . (M,1) in the left end side thereof and data of two pixels is added to the right end side of the image by using data (1,N) (2,N) . . . (M,N) in the right end side thereof. Data of one line is added to the upper end side of the image by using data (1,1) (1,2) . . . (1,N) in the upper end side thereof and data of one line is added to the lower end side of the image by using data (M,1) (M,2) . . . (M,N) in the lower end side thereof. Thus, an image data added part is inconspicuous, and deterioration in picture quality caused by a compressing and reduction in the data compression ratio can be prevented.

    摘要翻译: 本发明涉及一种能够基于处理后的图像数据获得优选的再现图像的图像数据处理方法,即使图像数据在以块为单位从存储装置读取图像数据时短于块的单位 。 写入存储器中的“M行×N像素”的图像数据以由预定数量的像素组成的块为单位读取,并且读取的图像数据经受压缩编码处理等时,如果两行和数据的数据 每行四个像素的数据是短的,通过使用数据(1,1)(2,1)将每行两个像素的数据添加到图像的左端侧。 。 。 (M,1),并且通过使用数据(1,N)(2,N)将两个像素的数据添加到图像的右端侧。 。 。 (M,N)在右端侧。 通过使用数据(1,1)(1,2)将一行的数据添加到图像的上端侧。 。 。 (1,N),并且通过使用数据(M,1)(M,2)将一行的数据添加到图像的下端侧。 。 。 (M,N)的下端侧。 因此,图像数据添加部分不显眼,并且可以防止由数据压缩比的压缩和降低引起的图像质量的劣化。

    Image pick-up apparatus and method for picking up and synthesizing plural images to generate a dynamic range image
    7.
    发明授权
    Image pick-up apparatus and method for picking up and synthesizing plural images to generate a dynamic range image 失效
    用于拾取和合成多个图像以生成动态范围图像的图像拾取装置和方法

    公开(公告)号:US07352398B2

    公开(公告)日:2008-04-01

    申请号:US10398043

    申请日:2002-07-29

    申请人: Chikako Sano

    发明人: Chikako Sano

    IPC分类号: H04N5/235 H04N5/228 H04N5/202

    CPC分类号: H04N5/2355 H04N5/235

    摘要: The present invention is directed to a digital still camera (1) using CCD (Charge Coupled Device) image sensor as image pick-up device. This camera (1) comprises an image memory (18) in which plural images obtained by picking up images of the same object by different exposure values are stored, an image data adding circuit (17) for synthesizing the plural images stored in the image memory (18) to generate synthetic image in which dynamic range is broad, a Y gradation correction circuit (24) and a multiplier circuit (26) for compressing gradation of the synthetic image generated by the image data adding circuit (17), and a controller (29) for generating gradation conversion table for carrying out gradation compression. The controller (29) generates gradation conversion table on the basis of synthetic curve in which line determined on the basis of ratio between the number of gradations of synthetic image and the number of gradations of output image and histogram indicating luminance distribution of synthetic image are synthesized.

    摘要翻译: 本发明涉及使用CCD(电荷耦合器件)图像传感器作为摄像装置的数字静态照相机(1)。 本相机(1)包括图像存储器(18),其中存储通过以不同曝光值拾取相同对象的图像而获得的多个图像;图像数据添加电路(17),用于合成存储在图像存储器中的多个图像 (18)产生动态范围宽的合成图像,用于压缩由图像数据添加电路(17)生成的合成图像的灰度的Y灰度校正电路(24)和乘法器电路(26),以及控制器 (29),用于产生用于执行灰度压缩的灰度转换表。 控制器(29)基于合成曲线生成灰度转换表,其中基于合成图像的灰度数与输出图像的灰度数之间的比率以及合成图像的亮度分布的直方图的合成曲线 。

    Image data processing method, image data processing apparatus and digital still camera
    8.
    发明申请
    Image data processing method, image data processing apparatus and digital still camera 失效
    图像数据处理方法,图像数据处理装置和数码相机

    公开(公告)号:US20050146627A1

    公开(公告)日:2005-07-07

    申请号:US11075453

    申请日:2005-03-09

    申请人: Chikako Sano

    发明人: Chikako Sano

    CPC分类号: H04N19/60 H04N19/85

    摘要: This invention relates to an image data processing method or the like capable of obtaining a preferable reproduction image based on processed image data even if the image data is short of the unit of block on reading the image data from the memory means in the unit of block. When image data of “M lines×N pixels” written in a memory is read in a unit of block consisting of the predetermined number of pixels and the read image data is subjected to a compression coding process or the like, if data of two lines and data of four pixels per line are short, data of two pixels per line is added to the left end side of the image by using data (1,1) (2,1) . . . (M,1) in the left end side thereof and data of two pixels is added to the right end side of the image by using data (1,N) (2,N) . . . (M,N) in the right end side thereof. Data of one line is added to the upper end side of the image by using data (1,1) (1,2) . . . (1,N) in the upper end side thereof and data of one line is added to the lower end side of the image by using data (M,1) (M,2) . . . (M,N) in the lower end side thereof. Thus, an image data added part is inconspicuous, and deterioration in picture quality caused by a compressing and reduction in the data compression ratio can be prevented.

    摘要翻译: 本发明涉及一种能够基于处理后的图像数据获得优选的再现图像的图像数据处理方法,即使图像数据在以块为单位从存储装置读取图像数据时短于块的单位 。 写入存储器中的“M行×N像素”的图像数据以由预定数量的像素组成的块为单位读取,并且读取的图像数据经受压缩编码处理等时,如果两行和数据的数据 每行四个像素的数据是短的,通过使用数据(1,1)(2,1)将每行两个像素的数据添加到图像的左端侧。 。 。 (M,1),并且通过使用数据(1,N)(2,N)将两个像素的数据添加到图像的右端侧。 。 。 (M,N)在右端侧。 通过使用数据(1,1)(1,2)将一行的数据添加到图像的上端侧。 。 。 (1,N),并且通过使用数据(M,1)(M,2)将一行的数据添加到图像的下端侧。 。 。 (M,N)的下端侧。 因此,图像数据添加部分不显眼,并且可以防止由数据压缩比的压缩和降低引起的图像质量的劣化。

    Image data processing method, image data processing apparatus and digital still camera
    9.
    发明授权
    Image data processing method, image data processing apparatus and digital still camera 失效
    图像数据处理方法,图像数据处理装置和数码相机

    公开(公告)号:US06876385B1

    公开(公告)日:2005-04-05

    申请号:US09379072

    申请日:1999-08-23

    申请人: Chikako Sano

    发明人: Chikako Sano

    CPC分类号: H04N19/60 H04N19/85

    摘要: This invention relates to an image data processing method or the like capable of obtaining a preferable reproduction image based on processed image data even if the image data is short of the unit of block on reading the image data from the memory means in the unit of block. When image data of “M lines×N pixels” written in a memory is read in a unit of block consisting of the predetermined number of pixels and the read image data is subjected to a compression coding process or the like, if data of two lines and data of four pixels per line are short, data of two pixels per line is added to the left end side of the image by using data (1,1) (2,1) . . . (M,1) in the left end side thereof and data of two pixels is added to the right end side of the image by using data (1,N) (2,N) . . . (M,N) in the right end side thereof. Data of one line is added to the upper end side of the image by using data (1,1) (1,2) . . . (1,N) in the upper end side thereof and data of one line is added to the lower end side of the image by using data (M,1) (M,2) . . . (M,N) in the lower end side thereof. Thus, an image data added part is inconspicuous, and deterioration in picture quality caused by a compressing and reduction in the data compression ratio can be prevented.

    摘要翻译: 本发明涉及一种能够基于处理后的图像数据获得优选的再现图像的图像数据处理方法,即使图像数据在以块为单位从存储装置读取图像数据时短于块的单位 。 写入存储器中的“M行×N像素”的图像数据以由预定数量的像素组成的块为单位读取,并且读取的图像数据经受压缩编码处理等时,如果两行和数据的数据 每行四个像素的数据是短的,通过使用数据(1,1)(2,1)将每行两个像素的数据添加到图像的左端侧。 。 。 (M,1),并且通过使用数据(1,N)(2,N)将两个像素的数据添加到图像的右端侧。 。 。 (M,N)在右端侧。 通过使用数据(1,1)(1,2)将一行的数据添加到图像的上端侧。 。 。 (1,N),并且通过使用数据(M,1)(M,2)将一行的数据添加到图像的下端侧。 。 。 (M,N)的下端侧。 因此,图像数据添加部分不显眼,并且可以防止由数据压缩比的压缩和降低引起的图像质量的劣化。