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Volume 63 (2000)
- Issue 6 Pages 277-
- Issue 5 Pages 239-
- Issue 4 Pages 190-
- Issue 3 Pages 117-
- Issue 2 Pages 63-
- Issue 1 Pages 1-
Volume 63, Issue 4
Displaying 1-5 of 5 articles from this issue
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Takao KURODA2000 Volume 63 Issue 4 Pages 190-195
Published: August 25, 2000
Released on J-STAGE: August 11, 2011
JOURNAL FREE ACCESSDemand for higher resolution of CCD for digital still camera (DSC) is increasing. Several technologies are discussed which may be the solutions for pixel shrinkage propulsion. The importance to make the best of the flexibility that is an advantage of electronics system is also pointed out.View full abstractDownload PDF (2465K) -
OpticsHiromu MUKAI2000 Volume 63 Issue 4 Pages 196-200
Published: August 25, 2000
Released on J-STAGE: August 11, 2011
JOURNAL FREE ACCESSThe total number of pixels that taking a picture using 135 photographic film is calculated from resolution and permissible circle of confusion and target frequency that is needed by high quality digital camera system is supposed. Correlation between factors that influence image quality is cleared by MTF. The optical problem is made clear to take high precision image.View full abstractDownload PDF (578K) -
Jun MINAKUTI2000 Volume 63 Issue 4 Pages 201-203
Published: August 25, 2000
Released on J-STAGE: August 11, 2011
JOURNAL FREE ACCESSDownload PDF (457K) -
Makiko BABA, Tetsuya ISHIHARA, Masaya TAMARU, Masafumi INUIYA, Hideaki ...2000 Volume 63 Issue 4 Pages 204-209
Published: August 25, 2000
Released on J-STAGE: August 11, 2011
JOURNAL FREE ACCESSImage quality of CCD camera has been evaluated by a number of pixels. Image quality of CCD camera, however, is dependent on many factors such as structure and array of CCD, interpolation method, images processing, printer characteristics and so on. In this study, image quality of two kinds of CCD camera with conventional interline and honeycomb structure and array was analyzed by computer simulation. From the observer rating experiment, it was shown that the image quality of CCD camera with honeycomb structure is correspondent approximately 1.3 times to pixel numbers of conventional interline CCD.View full abstractDownload PDF (10014K) -
Masao MATSUMOTO, Katsutosi HISAMORI, Kiyonari INAMURA, Shinichi INOUE, ...2000 Volume 63 Issue 4 Pages 210-216
Published: August 25, 2000
Released on J-STAGE: August 11, 2011
JOURNAL FREE ACCESSWe measured physical properties (digital characteristic curve, presampling MTF and digital Wiener spectrum) of indirect-detection flat-panel detector set up on Department of Radiology in Osaka University Hospital and compared them with those of the HR series (for mammography) and ST series (for general) imaging plates (IPs) of Computed Radiology system (CR) and were discussed. The digital characteristic curve were similar wide dynamic range as well as the IP of CR system. The calculated presampling MTF from profile curves of the slit image were similar sharpness as well as the MTF of HR series IP of CR system. The digital Wiener spectra pointed between Wiener spectra of HR series and ST series IPs of CR system. Therefore the indirect-detection flat-panel detector were useful in diagnosis.View full abstractDownload PDF (6348K)
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