Patents Assigned to Keisoku Giken Co., Ltd.
-
Patent number: 9848163Abstract: For sharpening an input image by up-converting the input image in order to increase the number of pixels of an image and generating a frequency component higher than a frequency component contained in an input image signal representing the input image, the number of multipliers is reduced, thereby achieving significant downsizing of an apparatus and cost reduction. An image processing apparatus includes a path on a base image side for up-converting the input image signal and a path on a sharpening processing side for carrying out nonlinear arithmetic processing on the input image signal. The path on the sharpening processing side includes an up-converter at a subsequent stage of at least one filter, after which the nonlinear arithmetic processing is carried out. The at least one filter may be either a two-dimensional low pass filter for noise removal or a high pass filter for removing a DC component.Type: GrantFiled: August 20, 2014Date of Patent: December 19, 2017Assignee: KEISOKU GIKEN Co., Ltd.Inventors: Seiichi Gohshi, Jin Ogasawara, Shinichiro Nakamura
-
Patent number: 9734563Abstract: An image is sharpened by using a frequency component exceeding a Nyquist frequency. In particular, an image processing apparatus 100 of the disclosure herein for generating an output image by sharpening an input image includes a first nonlinear processing unit 101 configured to generate a first signal by carrying out nonlinear processing on an input image signal representing the input image, a sharpening processing block 102 configured to generate a second signal containing a frequency component higher than a frequency component contained in the first signal by carrying out sharpening processing on the first signal, and an adder 103 configured to generate an output image signal representing the output image by adding the second signal to the input image signal.Type: GrantFiled: August 29, 2014Date of Patent: August 15, 2017Assignee: KEISOKU GIKEN CO., LTD.Inventors: Seiichi Gohshi, Jin Ogasawara, Shinichiro Nakamura, Keisuke Ohashi
-
Publication number: 20170116713Abstract: An image is sharpened by using a frequency component exceeding a Nyquist frequency. In particular, an image processing apparatus 100 of the disclosure herein for generating an output image by sharpening an input image includes a first nonlinear processing unit 101 configured to generate a first signal by carrying out nonlinear processing on an input image signal representing the input image, a sharpening processing block 102 configured to generate a second signal containing a frequency component higher than a frequency component contained in the first signal by carrying out sharpening processing on the first signal, and an adder 103 configured to generate an output image signal representing the output image by adding the second signal to the input image signal.Type: ApplicationFiled: August 29, 2014Publication date: April 27, 2017Applicants: KEISOKU GIKEN Co., Ltd., KEISOKU GIKEN Co., Ltd.Inventors: Seiichi GOHSHI, Jin OGASAWARA, Shinichiro NAKAMURA, Keisuke OHASHI
-
Patent number: 9495732Abstract: An image is sharpened by using a frequency component higher than Nyquist frequency. An image enhancing device 1 according to an embodiment of the present invention for generating an output image by sharpening an input image, includes: a filter unit 10 configured to generate a first signal by eliminating at least a direct current component of a frequency component included in an input image signal representing the input image; a nonlinear processing unit 20 configured to generate a second signal by carrying out, to the first signal, nonlinear processing asymmetric between a positive area and a negative area of the first signal; a limiter 30 configured to generate a third signal by adjusting the second signal; and an adder 50 configured to generate an output image signal representing the output image by adding the third signal to the input image signal.Type: GrantFiled: June 6, 2013Date of Patent: November 15, 2016Assignee: KEISOKU GIKEN Co., Ltd.Inventor: Seiichi Gohshi
-
Patent number: 9471962Abstract: An image enhancement apparatus according to the present invention for generating an output image obtained by sharpening an input image includes a non-linear processing unit configured to carry out non-linear processing on an input image signal representing the input image, a filter unit configured to generate a second signal by removing at least a DC component of the frequency components included in the first signal, a limiter configured to generate a third signal by adjusting the second signal, and an adder configured to generate an output image signal representing the output image by adding the third signal to the input image signal.Type: GrantFiled: August 7, 2013Date of Patent: October 18, 2016Assignee: KEISOKU GIKEN CO., LTD.Inventor: Seiichi Gohshi
-
Publication number: 20160247265Abstract: An image is sharpened by using a frequency component exceeding a Nyquist frequency. In particular, an image processing apparatus 100 of the disclosure herein for generating an output image by sharpening an input image includes a first nonlinear processing unit 101 configured to generate a first signal by carrying out nonlinear processing on an input image signal representing the input image, a sharpening processing block 102 configured to generate a second signal containing a frequency component higher than a frequency component contained in the first signal by carrying out sharpening processing on the first signal, and an adder 103 configured to generate an output image signal representing the output image by adding the second signal to the input image signal.Type: ApplicationFiled: August 29, 2014Publication date: August 25, 2016Applicants: KEISOKU GIKEN Co., Ltd., KEISOKU GIKEN Co., Ltd.Inventors: Seiichi GOHSHI, Jin OGASAWARA, Shinichiro NAKAMURA, Keisuke OHASHI
-
Publication number: 20160205342Abstract: For sharpening an input image by up-converting the input image in order to increase the number of pixels of an image and generating a frequency component higher than a frequency component contained in an input image signal representing the input image, the number of multipliers is reduced, thereby achieving significant downsizing of an apparatus and cost reduction. An image processing apparatus includes a path on a base image side for up-converting the input image signal and a path on a sharpening processing side for carrying out nonlinear arithmetic processing on the input image signal. The path on the sharpening processing side includes an up-converter at a subsequent stage of at least one filter, after which the nonlinear arithmetic processing is carried out. The at least one filter may be either a two-dimensional low pass filter for noise removal or a high pass filter for removing a DC component.Type: ApplicationFiled: August 20, 2014Publication date: July 14, 2016Applicant: KEISOKU GIKEN Co., Ltd.Inventors: Seiichi GOHSHI, Jin OGASAWARA, Shinichiro NAKAMURA
-
Publication number: 20150373234Abstract: An image is sharpened without generating, in frequency domain exceeding frequency component in horizontal and vertical direction, frequency component caused by sharpening carried out in horizontal and vertical direction in overlapping manner.Type: ApplicationFiled: February 25, 2014Publication date: December 24, 2015Applicant: KEISOKU GIKEN CO., LTD.Inventors: Seiichi GOHSHI, Jin OGASAWARA, Shinichiro NAKAMURA
-
Publication number: 20040201393Abstract: The electronic load apparatus where an inductance is given to the source of a transistor for controlling load current, so that the frequency response characteristic of the electronic load control loop and the electronic load transient response characteristics at the starting of the power supply to be tested are improved; and by providing a non-linear element between the input and output of an operational amplifier for the driving transistor of the controlling circuit, a better load current control characteristic is obtained in a wide load current range.Type: ApplicationFiled: April 6, 2004Publication date: October 14, 2004Applicant: Keisoku Giken Co., Ltd.Inventor: Kenji Nitadori
-
Patent number: 4199254Abstract: The accuracy of an optical measuring system is improved by directing a parallel light beam across the surface of a moving object in a direction perpendicular to the direction of movement so that movement of the object in the direction of the light beam will not affect the measurement accuracy. For measurement purposes, the silhouette of the object can be roughened by coating with an easily removable foreign substance such as wheat flour.Type: GrantFiled: May 23, 1978Date of Patent: April 22, 1980Assignees: Sumitomo Electric Industries, Ltd., Akira Kobayashi, Keisoku Giken Co., Ltd.Inventors: Akira Kobayashi, Susumu Ihara