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    • 52. 发明授权
    • Image correction device and image correction method
    • 图像校正装置和图像校正方法
    • US07796159B2
    • 2010-09-14
    • US11664459
    • 2006-04-06
    • Toshiyuki ShimizuYoshiki OnoNaoyuki FujiyamaShuji SotodaYoshiko Hatano
    • Toshiyuki ShimizuYoshiki OnoNaoyuki FujiyamaShuji SotodaYoshiko Hatano
    • H04N5/228G06K9/40
    • G06T5/20H04N5/23212H04N5/23248H04N5/23254H04N5/23264
    • An image correction method can perform adaptive correction processing to a taken image by a simple construction in a short time, and includes the steps of: computing window region local difference values for a plurality of neighboring pixels, each of the window region local difference values being a difference value between image data of a notice pixel (33a) in a difference value determination region (32) formed of a whole or a part of a screen area of an input image (31) and image data of a neighboring pixel in a window region (33) set around the notice pixel (33a), thereby determining a maximum local difference value which is a maximum value of the window region local difference values in each window region; determining a threshold value reflecting a characteristic of the input image on the basis of the maximum local difference value; producing adaptive filter coefficients for respective pixels of the input image by using the threshold value; and performing filter processing of the input image by using the adaptive filter coefficients.
    • 图像校正方法可以通过简单的结构在短时间内对拍摄图像执行自适应校正处理,并且包括以下步骤:计算多个相邻像素的窗口区域局部差值,每个窗口区域局部差值为 在由输入图像(31)的整个或一部分屏幕区域形成的差值确定区域(32)中的通知像素(33a)的图像数据与窗口中的相邻像素的图像数据之间的差值 区域(33)设置在通知像素(33a)周围,从而确定作为每个窗口区域中的窗口区域局部差值的最大值的最大局部差值; 基于所述最大局部差值确定反映所述输入图像的特性的阈值; 通过使用所述阈值对所述输入图像的各个像素产生自适应滤波器系数; 并且通过使用自适应滤波器系数来执行输入图像的滤波处理。
    • 53. 发明授权
    • Fishfinder
    • 钓鱼者
    • US07663974B2
    • 2010-02-16
    • US11542425
    • 2006-10-02
    • Mitsuhiro InouchiToshiyuki ShimizuMasahiko MushiakeMasaki OgataYoshito Okubo
    • Mitsuhiro InouchiToshiyuki ShimizuMasahiko MushiakeMasaki OgataYoshito Okubo
    • G01S15/04G01S15/96
    • G01S15/96G01S7/539G01S7/62G01S7/6263G01S15/108
    • A fishfinder is provided for identifying with high precision a single fish under the ship and for measuring the length of the fish precisely. An operator of the fishfinder is assisted to grasp the depth and the length of the fish. A fishfinder transmits an ultrasound pulse having a high carrier frequency and an ultrasound pulse having a low carrier frequency by means of a pulse transmission and reception device at predetermined time intervals. A single fish echo is determined and tracked for a plurality of transmission intervals of ultrasound pulses emitted into the water. A target strength of single fish is measured based on the signal strength of a low carrier frequency echo signal from the single fish. The length of the fish is measured based on the target strength. A fish mark is displayed on the screen of an indicator, with the size of the fish mark depending on the fish length.
    • 提供了一种钓鱼器,用于高精度识别船下的单鱼,并精确测量鱼的长度。 帮助捕鱼者的操作者抓住鱼的深度和长度。 钓鱼器以预定的时间间隔通过脉冲发送和接收装置发送具有高载波频率的超声脉冲和具有低载波频率的超声脉冲。 确定并跟踪发射到水中的超声脉冲的多个传播间隔的单个鱼回声。 基于来自单个鱼的低载波频率回波信号的信号强度来测量单个鱼的目标强度。 基于目标强度测量鱼的长度。 鱼标记显示在指示器的屏幕上,鱼标的大小取决于鱼的长度。