JPS6470028A - Shading system of three-dimensional image - Google Patents
Shading system of three-dimensional imageInfo
- Publication number
- JPS6470028A JPS6470028A JP62226313A JP22631387A JPS6470028A JP S6470028 A JPS6470028 A JP S6470028A JP 62226313 A JP62226313 A JP 62226313A JP 22631387 A JP22631387 A JP 22631387A JP S6470028 A JPS6470028 A JP S6470028A
- Authority
- JP
- Japan
- Prior art keywords
- inclination
- adjacent point
- normal line
- dimensional image
- size
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Analysing Materials By The Use Of Radiation (AREA)
- Apparatus For Radiation Diagnosis (AREA)
- Image Generation (AREA)
Abstract
PURPOSE:To enhance the image quality of a three-dimensional image by remov ing an artifact, by extracting the inclination of the adjacent point of a distance image becoming a basis and adaptably changing the size of the surface bonded to a surface for calculating a normal line vector corresponding to said inclina tion. CONSTITUTION:The inclination of the adjacent point of a distance image formed of the triangle surface 112 bonded to a surface 11 for calculating a normal line vector 111 is suitably changed corresponding to said inclination. When the inclination of the aforementioned adjacent point is small, the inclination with a further separated point is calculated and the size of the triangle surface is widened until exceeds a threshold value set beforehand. For example, when the inclination with the just adjacent point exceeds the threshold value, the triangle surface of the min. size set beforehand is supposed. Since change of the normal line vector 111 determining shading can be made smooth, the image quality of an obtained three-dimensional image is enhanced.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62226313A JPS6470028A (en) | 1987-09-11 | 1987-09-11 | Shading system of three-dimensional image |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62226313A JPS6470028A (en) | 1987-09-11 | 1987-09-11 | Shading system of three-dimensional image |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6470028A true JPS6470028A (en) | 1989-03-15 |
Family
ID=16843242
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62226313A Pending JPS6470028A (en) | 1987-09-11 | 1987-09-11 | Shading system of three-dimensional image |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6470028A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007020873A (en) * | 2005-07-15 | 2007-02-01 | Hitachi Medical Corp | Medical image processing device and image processing program |
-
1987
- 1987-09-11 JP JP62226313A patent/JPS6470028A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007020873A (en) * | 2005-07-15 | 2007-02-01 | Hitachi Medical Corp | Medical image processing device and image processing program |
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