| The tree-ring is the most important attributes of the natural wood, one ofmeasurement and data acquisition rings research is an important means of treesecological research. Along with the computer image processing technologydevelopment, the tree-ring parameters for the measurement of the new method andmeans to provide, make quick and accurate by tree rings feature data becomepossible.This paper will digital image processing technology in the tree-ringmeasurement, for the tree-ring parameters measurement of the specific problems, toobtain the tree-ring image processing, On the basis of tree-ring parametersmeasurement.The first use of Matlab software read different tree-ring image, thenthe image pretreatment, then gray equalization processing to eliminate the imageportion of the noise, finally get the tree-ring boundary feature. In the annual ringboundary extraction process, respectively using edge detection methods and thethreshold method for ring images of the corresponding segmentation processing, thesimulation results show that, compared with these methods, the Canny edgedetection operator ring image noise is little, ring line clear, complete, convenientring boundary feature extraction. In addition, due to the unavoidable presence of treerings, knots, capsule inner crack defects, causing the processing after the ringimages in some areas still exist on noise, to overcome this problem, this paper adoptsregion selection mode will ring line clear, complete and no defects of regionsegmentation, and the segmentation the region part of the two values of the ring linefeature is more apparent, finally using the scan line algorithm for ring numberacquisition. In the threshold segmentation of the results of the image on the tree-ringwidth measurement, and with the help of drawing software AutoCAD marker ringwidth measuring line and auxiliary line, and then through the software from thequery and target capture function, realize the annual ring width quick measurement. |
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