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    • 108. 发明授权
    • Image analysis method and device
    • 图像分析方法和装置
    • US06236756B1
    • 2001-05-22
    • US09210769
    • 1998-12-14
    • Shunichi KimuraSetsu KunitakeYutaka KoshiKoh Kamizawa
    • Shunichi KimuraSetsu KunitakeYutaka KoshiKoh Kamizawa
    • G06K946
    • G06T9/00
    • An image analysis device and method that have a mechanism for exactly predicting image quality determining factors and determine a coding parameter for an input image by combining plural different image quality determining factors, which does not deteriorate the image quality of the input image and raises the compression ratio as high as possible. In the image analysis device, an image extraction unit 102 extracts an image area to be analyzed from an input image 101. The extracted image area 102 is input to plural physical quantity calculating units 104. Each physical quantity calculating unit 104 calculates a physical quantity 105 independently of others and each of obtained physical quantities 105 is input to plural image quality determining factor calculating units 106. On receiving the plural physical quantities 105, each of the image quality determining factor calculating units 106 calculates an image quality determining factor 107. A coding parameter calculating unit 108 calculates a coding parameter based on the plural image quality determining factors 107 output from the plural image quality determining factor calculating units 106.
    • 一种图像分析装置和方法,具有用于精确地预测图像质量决定因素的机构,并且通过组合多个不同的图像质量确定因子来确定输入图像的编码参数,这不会降低输入图像的图像质量并提高压缩 比例尽可能高。 在图像分析装置中,图像提取单元102从输入图像101提取要分析的图像区域。提取图像区域102被输入到多个物理量计算单元104.每个物理量计算单元104计算物理量105 独立于其他,并且获得的每个物理量105被输入到多个图像质量确定因子计算单元106.在接收到多个物理量105时,每个图像质量确定因子计算单元106计算图像质量确定因子107.编码 参数计算单元108基于从多个图像质量确定因子计算单元106输出的多个图像质量确定因子107来计算编码参数。
    • 109. 发明授权
    • Image coding devise and image decoding devise using with image
disassembly
    • 图像编码设计和图像解码设计使用图像拆卸
    • US6072909A
    • 2000-06-06
    • US730764
    • 1996-10-15
    • Taro YokoseShunichi KimuraYutaka Koshi
    • Taro YokoseShunichi KimuraYutaka Koshi
    • G06T1/20G06K9/36G06K9/46
    • G06T1/20
    • Disclosed herein are easy-to-realize multivalued image coding and decoding devices, each of which is capable of reducing memories in number while the accuracy of calculations necessary upon coding and decoding is being held and relaxing a probability estimate. An image disassembler disassembles a bit string indicative of pixels into a plurality of parts in response to image data inputted from an image input unit. Further, the image disassembler sends the value of each disassembled pixel to be coded and the value of each disassembled pixel for reference to an image analyzer as disassembled image data. The image analyzer sends the value of each disassembled pixel to be coded to a coding unit as disassembled pixel-value data and transmits the value of the reference pixel to a probability estimate unit as status data. The probability estimate unit sends probability estimate data corresponding to the status data to the coding unit. The coding unit creates a codeword for each disassembled part from the probability estimate data and the disassembled pixel-value data and sends it to a code output unit as coded data.
    • 这里公开的是容易实现的多值图像编码和解码装置,其中每个都能够减少编码和解码所需的计算精度并放宽概率估计的数量上的存储器。 图像反汇编器响应于从图像输入单元输入的图像数据,将指示像素的位串拆分为多个部分。 此外,图像分解器将要被编码的每个拆卸的像素的值和每个拆卸的像素的值发送到图像分析器作为反汇编的图像数据。 图像分析器将要被编码的每个拆卸的像素的值作为分解的像素值数据发送到编码单元,并将参考像素的值作为状态数据发送到概率估计单元。 概率估计单元将对应于状态数据的概率估计数据发送给编码单元。 编码单元从概率估计数据和拆卸的像素值数据为每个拆卸部分创建码字,并将其作为编码数据发送到代码输出单元。