All issues
Volume 30 (1993)
- Issue 6 Pages 346-
- Issue 5 Pages 284-
- Issue 4 Pages 226-
- Issue 3 Pages 142-
- Issue 2 Pages 76-
- Issue 1 Pages 2-
Volume 30, Issue 5
Displaying 1-9 of 9 articles from this issue
- |<
- <
- 1
- >
- >|
-
(4) Colorimetry Colorimetry and Color Communication in Offset PrintingTetsuo IGA, Yoshifumi ARAI1993 Volume 30 Issue 5 Pages 284-289
Published: September 30, 1993
Released on J-STAGE: September 27, 2010
JOURNAL FREE ACCESSCharacterization of printing color is important technology in graphic arts industry. In the characterization, color measurement is one of key technology. On the other hand, colorimetry is only valid in ideal condition. This report shows colorimetric methods in offset printing and color printer, color communication concepts in color DTP application, and perceptual study for photographic images.View full abstractDownload PDF (1337K) -
(4) Colorimetry Recent Trend in Hand-held ColorimeterTomoo OHSHIMA1993 Volume 30 Issue 5 Pages 290-296
Published: September 30, 1993
Released on J-STAGE: September 27, 2010
JOURNAL FREE ACCESSHand-held colorimeter enjoys a wide variety of use and is applied for various kinds of color science and engineering, especially drawing a great deal of attention for advanced inspection of color quality control sustained by a big potential. This paper deals with the recent progress of market demand on essential problem to down-size hand-held colorimeter and the author has listed the specifications for each of hand-held colorimeters commercially available. It is now facing an era of significant technical innovation to meet with a general concern of color scientists and engineers about enhanced understanding for gonio-spectro-photometrical measurement on substances pigmented with metallic colorants.View full abstractDownload PDF (1347K) -
(4) Colorimetry Colorimetrical Image ReproductionShuichi OHTSUKA1993 Volume 30 Issue 5 Pages 297-302
Published: September 30, 1993
Released on J-STAGE: September 27, 2010
JOURNAL FREE ACCESSThere are many image transformation steps, between taking a photograph of an object and printing it on paper. I inspect these steps from the colorimetrical point of view. Some steps are colorimetrically insufficient because of the theoretical reason. In these steps, “favorite image” can be made by experts based on experience. But it is the colorimetrically sufficient step to read film by image scanner using the information of individual color film. We can get device independent color image date from this step.View full abstractDownload PDF (1202K) -
Michihiko HIRASAWA1993 Volume 30 Issue 5 Pages 303-307
Published: September 30, 1993
Released on J-STAGE: September 27, 2010
JOURNAL FREE ACCESSIn order to interchange documents, search documents and distribute documents as CD-ROM, it is necessary to make a database by structuring documents based on the contents. Standard Generalized Mark-up Language (SGML: ISO8879) is an international standard for processing and interchanging document by strictly describing document as a database. We have made a journal of treatise for the first time in Japan, using SGML. As a joint research with NACSIS (National Center for Science Information System), we have also produced a CD-ROM hypertext system and journal of treatise from one SGML fulltext database.View full abstractDownload PDF (641K) -
Kenji OTSUKA, Takeshi AGUI, Hiroshi NAGAHASHI, Caiming Zhang1993 Volume 30 Issue 5 Pages 308-314
Published: September 30, 1993
Released on J-STAGE: September 27, 2010
JOURNAL FREE ACCESSThis paper describes a structure analysis method of character regions on the backbone of a book extracted from a bookshelf image by the image processing method previously proposed by the authors. This analysis method consists of two processes. In one process, character string regions are made from extracted character regions by the use of size and position of circumscribed rectangles of the characters. In the other one, the character strings are classified into several categories such as title of a book, author's name and so on, by a 4-layered neural network whose input patterns are geometrical features of the character strings. Correct recognition ratio for 497 regions of 115 books was 89.5 percents in the region recognition experiments. This method can be applied to making library databases, automatic management of books and so on.View full abstractDownload PDF (1755K) -
Hiroshi NAGAHASHI, Daisuke MINOURA, Takeshi AGUI, Tomoharu NAGAO1993 Volume 30 Issue 5 Pages 315-321
Published: September 30, 1993
Released on J-STAGE: September 27, 2010
JOURNAL FREE ACCESSThis paper describes an image processing method to detect defects on the surface of silk screen printed plates which are plane plastics products. The final inspection of printed plates is always executed by human, and it has several problems such as oversights of defects, a long time laborious work and so on. The proposed method is developed for reduction of labor and automatic inspection. After inputting photographs of printed plates to a computer, the following processes are executed in this order; edge enhancement, position normalization, template matching and extraction of potential regions for surface defects. By analyzing features of each region, defects are extracted successfully.View full abstractDownload PDF (4025K) -
On the Preferred Color ReproductionYoichi MIYAKE1993 Volume 30 Issue 5 Pages 322-327
Published: September 30, 1993
Released on J-STAGE: September 27, 2010
JOURNAL FREE ACCESSIt is considered that the preferred color reproduction is one of the final purpose of designing the imaging systems. To attain the preferred color reproduction is, however, not easy since the preferred color is dependent on many factors. In this paper, a simple method is introduced and described to predict the preferred colors of skin in hardcopy prints and endoscopic image on the CRT based on the local color correction and observer rating experiment.View full abstractDownload PDF (1483K) -
3. FontsTohru SHIMABUKURO1993 Volume 30 Issue 5 Pages 328-334
Published: September 30, 1993
Released on J-STAGE: September 27, 2010
JOURNAL FREE ACCESSFonts for printing are available in either analog or digital form. Analog fonts mean to use conventional optical methods to scale the fonts, while digital fonts to use computers to handle them. Digital fonts have many advantages in computerized pre-press systems since all fonts are stored in computers. Recent development of computer software to create digital fonts has facilitated the development of a number of digital Kanji fonts. It unburdened font developers from time-consuming tasks, and accelerated the move toward integrating characters and digital images. There are many characters each of which is expressed by fonts in various shapes with subtle differences. These shapes in each Kanji font have a long history behind them, and can not be easily disregarded. Printing companies have been responsive to the demand of customers by providing a variety of fonts which include fonts unlisted in JIS.View full abstractDownload PDF (1526K) -
Akira KIJIMA1993 Volume 30 Issue 5 Pages 335-338
Published: September 30, 1993
Released on J-STAGE: September 27, 2010
JOURNAL FREE ACCESSDownload PDF (672K)
- |<
- <
- 1
- >
- >|