| MICROCOMPUTER PROCESSING THE PHOTOGRAPH OF TIMBER WITH HOLE KNOTS |
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| 引用本文： | 宋国育,王述洋,戚大伟,柳长明. MICROCOMPUTER PROCESSING THE PHOTOGRAPH OF TIMBER WITH HOLE KNOTS[J]. 林业研究, 1995, 6(1): 60-65. DOI: 10.1007/BF02843218 |
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| 作者姓名： | 宋国育 王述洋 戚大伟 柳长明 |
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| 摘 要： | THRESHoLDWhenthetimberswiththeho1eknotsarepassedthesystemofX-raynon-de-structiveinvestigation,thesimulatednu-meralsfigureoftheholeknotsappearinthemonitor.Thesimulatednumeralsfigureisshownintablel.Meanwhilethehistogramofthisfigurearedoublepeakcertainly.Inordertoidentifytheedgeoftheholeknotswithnakedeyeandcarryoutautomatictreatment,Wetakethebinaryva1uetreatmentforthefigure'Thechoos-ingthresholdisaveryimportantpartinthebinaryvaluetreatment.Howtochooseasuitablethreshold?Weshouldpaymuchattenti…
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Microcomputer processing the photograph of timber with hole knots |
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| Song Guoyu,Wang Shuyang,Qi Dawei,Liu Changming. Microcomputer processing the photograph of timber with hole knots[J]. Journal of Forestry Research, 1995, 6(1): 60-65. DOI: 10.1007/BF02843218 |
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| Authors: | Song Guoyu Wang Shuyang Qi Dawei Liu Changming |
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| Affiliation: | Song Guoyu;Wang Shuyang;Qi Dawei (Northeast Forestry University)Liu Changming (General Labour Union of Heilongjiang Province) |
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| Abstract: | A reliable method non-destructive X-ray test of wood defects with computer digital image processing technique was presented in the paper which made the knot-hole in wood clear and easily recognized. It was the first time to use maximtun entropy to determine the threshold of binary picture and thc result was satisfying. The improved Robert was used in the paper in the paper to outline the knot-hole so that the processing was almost on real time. |
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| Keywords: | Knot-hole Image processing Nondestructive test Threshold |
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