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41. 发明专利

JPH0260771A IMAGE PROCESSING SYSTEM 失效
公开(公告)号：JPH0260771A
公开(公告)日：1990-03-01
申请号：JP21238788
申请日：1988-08-29
申请人： CANON KK
发明人： KATAYAMA AKIHIRO , OSAWA HIDESHI
IPC分类号： B41J2/52 , G06T5/00 , H04N1/40 , H04N1/405 , H04N1/409
摘要： PURPOSE:To prevent the generation of pink part and a granular feeling in a low-density part by providing a threshold generating means for generating a threshold according to a density value of target pixel data and a binarizing means for generating binary output pixel data for the target pixel data. CONSTITUTION:An edge detection circuit 5 detects whether a target pixel is on an edge from a relation between the target pixel and surrounding pixels and outputs a signal corresponding to the judged result to a signal line 200. An threshold set circuit 7 sets a threshold according to corrected data outputted on a data line 100 and outputs the set threshold to a data line 300. Then, a binarizing circuit 6 binarizes the data of a target pixel on the basis of the edge detection signal on the signal line 200, the threshold issued from the threshold set circuit 7, and a signal on a signal line 400 and outputs the result on a signal line 500. Then, based on the signal '1' or '0' outputted on the signal line 500, an output part 9 forms a visible image.

42. 发明专利

JPH01254071A PICTURE PROCESSOR 失效
公开(公告)号：JPH01254071A
公开(公告)日：1989-10-11
申请号：JP8243088
申请日：1988-04-04
申请人： CANON KK
发明人： OSAWA HIDESHI , KATAYAMA AKIHIRO , ISHIDA YOSHIHIRO
IPC分类号： B41J2/52 , B41J3/00 , G06F3/12 , G06K15/00 , G06T1/00 , G06T5/00 , H04N1/40 , H04N1/405
摘要： PURPOSE:To obtain a picture with excellent gradation and simple processing by converting an input picture data into a high density data, binarizing it and outputting the input picture data in a multi-value level based on the result. CONSTITUTION:A picture data read by an input sensor 11 is converted into a digital signal by an A/D converter 12 and the signal is subject to correction and adjustment processing such as shading correction and contrast adjustment. Then a picture element density conversion circuit (I) 14 converts the data into a data with a picture element density finer than the input picture element density and a binarizing circuit 15 applies binarizing processing in the main scanning direction by a double density. Then a picture element density conversion circuit (II) 16 applies conversion restoring the binarized data with high density into a multi-value data with output picture element density of a multi-value printer 17. Thus, it is possible to express the input picture data in a multi-value level based on the simple binarizing processing.

43. 发明专利

JPS63310270A IMAGE PROCESSOR 失效
公开(公告)号：JPS63310270A
公开(公告)日：1988-12-19
申请号：JP14631587
申请日：1987-06-11
申请人： CANON KK
发明人： NAGASHIMA SUNAO , ICHIKAWA HIROYUKI , KATAYAMA AKIHIRO
IPC分类号： H04N1/405 , G06T3/00 , G06T5/00 , H04N1/40
摘要： PURPOSE:To prevent a line from being generated in a boundary part of an image by dividing an original into plural scanning areas, dispersing a generated error data to peripheral picture elements, executing an intermediate processing, and allowing the adjacent scanning area to have a continuity. CONSTITUTION:By a scan of once of a CCD unit, an image data of plural lines is obtained, and by connecting an SW1, an error data to be added to the 257th and the 258th data of each line is stored in a link error memory 328 from a delay part 310. These error data are read out of the memory 328 by synchronizing with the first and the second image data of the corresponding line in plural lines obtained by the next scan. Then read-out error data is sent to an adder 322 by an SW2, added to the corresponding image data, and thereafter, brought to an error allocation and a binarization processing. The error data to be added to the image data corresponding to the first picture element and the second picture element of the next area is stored in the memory 328 through the SW1 in the same way as the first scan.

44. 发明专利

JPS63289684A METHOD FOR DETECTING EDGE 失效
公开(公告)号：JPS63289684A
公开(公告)日：1988-11-28
申请号：JP12544787
申请日：1987-05-21
申请人： CANON KK
发明人： KATAYAMA AKIHIRO
IPC分类号： H04N1/00 , G06T7/60 , H04N1/40 , H04N1/409
摘要： PURPOSE:To improve the accuracy and efficiency of detection by shifting a block to be inputted by one or plural picture elements from a preceding block in accordance with a result whether the block processed immediately before the current one is an edge part or not. CONSTITUTION:Image data from an input device 11 is converted into digital data by a A/D converter 12 and shading correction or the like is executed by a correcting circuit 13. A corrected signal is stored in respective memories 14a, 14b so that block data shifted by plural picture elements in the main scanning direction are stored in the memory 14a and block data shifted by one picture element are held in the memory 14b. A selector 15 outputs a signal 300 when a signal 500 is '1' or a signal 200 when the signal 500 is '0' to an edge detecting circuit 16, the circuit 16 finds out a difference between the maximum value and the minimum value in the block, and when the difference is more than a threshold level, the block is the edge part is decided, and '1' is outputted as a decision signal 500. When the difference is smaller than the threshold level, '0' is outputted. Consequently, the detecting accuracy and efficiency can be improved.

45. 发明专利

JPS63288567A IMAGE PROCESSOR 失效
公开(公告)号：JPS63288567A
公开(公告)日：1988-11-25
申请号：JP12261287
申请日：1987-05-21
申请人： CANON KK
发明人： KATAYAMA AKIHIRO , OSAWA HIDESHI
IPC分类号： H04N1/405 , G06T5/00 , H04N1/40
摘要： PURPOSE:To reproduce an image in a high definition by corresponding to a calculated feature quantity, with a set allocating rate, feedbacking an error of before and after binarization with a binarization means and correcting the error. CONSTITUTION:Image data read by an input sensor 1 pass through an A/D converter 2 and execute the correction of nonuniformity, etc., with a correcting circuit 3. Data 100 already corrected are sent to an error correcting circuit 4 together with an erroneous data 300 of before and after binarization outputted from an error operating circuit 6. In the circuit 4, the data 100 and the data 300, which are weighted by a stored weighting coefficient, are added together and sent to a binarization circuit 5 as error correcting data 200. In the circuit 5, they are compared with a threshold, binarized and sent to a printer 7 and the error correcting circuit 6. In the circuit 6, the error between the data before binarization and the data after binarization is calculated and sent to the circuit 4 as the erroneous data 300.

46. 发明专利

JPS63285076A PICTURE PROCESSING METHOD 失效
公开(公告)号：JPS63285076A
公开(公告)日：1988-11-22
申请号：JP12161287
申请日：1987-05-18
申请人： CANON KK
发明人： KATAYAMA AKIHIRO
IPC分类号： B41J2/52 , B41J3/00 , G06F3/12 , G06K15/00 , G06T5/00 , H04N1/40 , H04N1/405
摘要： PURPOSE:To always reproduce a picture with high quality and high definition by splitting a picture into blocks comprising plural picture elements and selecting the total sum of the density in the said block to a density of a specific picture element in the block and selecting the density of the remaining picture element in the block zero. CONSTITUTION:Data is transferred in one block of m X n picture elements, an edge detection circuit 14 decide whether or not an edge exists in the block and outputs '1' when an edge exists and '0' when not exists as a signal 200. The signal 200 is inputted to a selector 15 and the signal 100 is used as the signal 300 when the signal 200 is at '0' to transfer it to the pre-processing circuit 16. The pre-processing circuit 16 sums the block data inputted as the signal 300 to apply pseudo dot method replacing the total sum of the density data in the block as the density of one picture element or plural picture elements in the block. Thus, dots are arranged periodically and the specific stripe pattern caused in case of binarizing by the error diffusion method is reduced.

47. 发明专利

JP2015091564A 撮影装置及び撮影方法、プログラム、記録媒体审中-公开
公开(公告)号：JP2015091564A
公开(公告)日：2015-05-14
申请号：JP2015031912
申请日：2015-02-20
申请人： CANON KK
发明人： WANDA KOICHIRO , KATAYAMA AKIHIRO
IPC分类号： A61B3/10
摘要：【課題】経時変化を伴う被写体について、比較観察に適した同一部位の詳細画像を精度よく容易に撮影するための技術を提供する。【解決手段】経時変化する眼部の同一部位の断面画像を、異なる日時に撮影する撮影装置であって、眼部の状態を示す状態情報と、経時変化が他の部分よりも大きい第1の領域との対応関係を示す対応情報を記憶する記憶手段と、記憶手段に記憶された眼部の状態を示す状態情報に対応する眼部の眼底画像の第1の領域に基づき、基準部分を眼部の眼底画像の第1の領域を除いた第2の領域から取得する取得手段と、基準部分に対する相対位置として設定される眼部の眼底画像上の撮像位置の眼部の断面画像を撮像する断面画像取得手段と、撮像した断面画像と撮像位置とを対応付けて記憶する記憶手段とを備える。【選択図】図9

48. 发明专利

JP2003208635A IMAGE REGENERATION DEVICE AND INFORMATION PROCESSING METHOD 审中-公开
公开(公告)号：JP2003208635A
公开(公告)日：2003-07-25
申请号：JP2002006071
申请日：2002-01-15
申请人： CANON KK
发明人： KOTAKE DAISUKE , ENDO TAKAAKI , KATAYAMA AKIHIRO , SUZUKI MASAHIRO
IPC分类号： G09B9/00 , G09B29/00 , G06T17/40
摘要： PROBLEM TO BE SOLVED: To make an observer do not feel unnaturalness when performing a walk-through in a virtual space expressed by a panorama image group. SOLUTION: This device is provided with an operation means for controlling visual point position and visual line direction; a visual point position and visual line direction determination means for determining the next visual point position and visual line direction according to the output of the operation means; and a regeneration means for reading an image according to the visual point position from an image group consisting of two or more images conformed to two or more branch points or a position on the route connecting the branch points, and regenerating a partial image matched to the visual line direction. COPYRIGHT: (C)2003,JPO

49. 发明专利

JP2003143477A IMAGE COMPOSITING DEVICE AND METHOD 审中-公开
公开(公告)号：JP2003143477A
公开(公告)日：2003-05-16
申请号：JP2001334708
申请日：2001-10-31
申请人： CANON KK
发明人： KUROKI TAKESHI , ANABUKI MAHORO , ONO EITA , SUZUKI MASAHIRO , KATAYAMA AKIHIRO
IPC分类号： G06T15/40 , G06T3/00 , G06T5/50 , G06T19/20 , G09G5/36 , G09G5/377 , H04N5/265 , G06T17/40
摘要： PROBLEM TO BE SOLVED: To realize an image compositing device which displays a virtual image with an actual background scenery and has no burden on a user to carry with. SOLUTION: The device comprises an imaging unit for photographing the actual world, a support for supporting the imaging unit having parts movable by the user's hand, an attitude measuring unit for measuring the relative attitude of the support to the imaging unit, a computer image generator for generating a computer image based on attitude information, an image compositing unit for the image taken by the imaging unit with the computer image, and a display for the composite image.

50. 发明专利

JPH08279961A METHOD AND DEVICE FOR PROCESSING PICTURE 失效
公开(公告)号：JPH08279961A
公开(公告)日：1996-10-22
申请号：JP8019795
申请日：1995-04-05
申请人： CANON KK
发明人： URISAKA SHINYA , KATAYAMA AKIHIRO , ONO EITA , TANAKA KOUICHIROU
IPC分类号： H04N5/262 , H04N7/18
摘要： PURPOSE: To accurately form a picture observed from a visual point different from respective visual points in a multi-visual point picture by the use of an epipolar plane image(EPI). CONSTITUTION: One object is photographed by four cameras 20 to 23 arranged on respectively different photographing positions (visual point positions) to obtain four multi-visual point pictures, a line on the same positions of respective pictures is detected to prepare an EPI, points corresponding to a given point on an object is detected from the EPI, and a picture to be obtained from a visual point position different from respective visual point positions is formed from these correspondence points by the use of interpolation. When both of an RGB display color system and an HVS (hue, brightness of color and saturation) display color system are used for the detection of correspondence points, the reduction of accuracy for the detection of the correspondence points due to the mirror reflection of an object can be removed.

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