Board appearance quality comprehensive quantitative evaluation method

Appearance quality, quantitative evaluation technology, applied in image data processing, instrumentation, calculation and other directions, can solve the problems of low efficiency, inaccurate evaluation of plate appearance quality, difficult online inspection and evaluation, etc., to save resources and energy, fast online inspection and classification , the effect of improving use value and commodity value

Active Publication Date: 2017-05-17
BEIJING FORESTRY MACHINERY RES INST OF STATE FORESTRY ADMINISTRATION
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AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of inaccurate evaluation of the appearance quality of the existing boards, low efficiency, and difficulty in realizing online detection and evaluation, the present invention provides a comprehensive quantitative evaluation method for the appearance quality of the boards

Method used

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  • Board appearance quality comprehensive quantitative evaluation method
  • Board appearance quality comprehensive quantitative evaluation method
  • Board appearance quality comprehensive quantitative evaluation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Get four sheet images, such as figure 1 , for image processing, such as figure 2 , measure the characteristic parameters of the plate image, including the length a of the plate, the width b of the plate, the long axis dimension d of the knot in the plate image, the area A of the knot in the plate image, the number of knots M, the length of the crack in the plate image l, the minimum distance e between the crack and the edge of the wooden veneer along the length direction, the number of cracks N, etc., the value of the color difference appearance quality evaluation The calculation statistics are shown in Table 1, and the calculation statistics of the comprehensive quantitative evaluation value Q of the panel appearance quality are shown in Table 2;

[0059] Table 1 Appearance quality evaluation value of color difference

[0060] image

[0061] Table 2 Comprehensive quantitative evaluation value of panel appearance quality

[0062] image

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Abstract

The invention particularly discloses a board appearance quality comprehensive quantitative evaluation method. The method solves the problems that existing board appearance quality evaluation is not accurate and low in efficiency, and online detection and evaluation are difficult to achieve. The board appearance quality comprehensive quantitative evaluation method includes the following steps that a board image is acquired, characteristic parameters of board appearance quality are measured, a knot influence coefficient h, a crack position influence coefficient k and a crack length influence coefficient p are constructed, a board appearance quality comprehensive quantitative evaluation measure value Q is determined accordingly, and Q is divided into four grades to define boards with different qualities. By means of the method, the defect that a traditional board appearance quality comprehensive quantitative evaluation method is too subjective or evaluation is not accurate due to too many influence factors is overcome, the board appearance quality comprehensive quantitative evaluation method can be applied to a wider range of fields, and a novel board appearance quality evaluation system can be constructed in combination with a computer image processing method and the like.

Description

technical field [0001] The invention relates to the field of wood processing in the agriculture and forestry industry, in particular to a comprehensive quantitative evaluation method for the appearance quality of boards. Background technique [0002] The board has multiple appearance features, especially surface material defects, processing defects, color difference and texture, which are the main factors that determine the appearance quality. National Standards GB / T 5849-2006 (Blockboard), GB / T 9846-2004 (Part 4: Technical Conditions for Appearance Classification of Ordinary Plywood), GB / T 13010-2006 (Sliced ​​Veneer), GB / T 17656-2008 (plywood for concrete formwork), GB / T 19536-2004 (plywood for container floor), GB / T 20241-2006 (laminated veneer lumber), etc., and forestry industry standard LY / T 1654-2006 (recombined Decorative veneer), LY / T 1655-2006 (recombined decorative wood), LY / T1599-2011 (rotary cut veneer), LY / T 1738-2008 (plywood for solid wood composite floor), ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00
CPCG06T7/0008G06T2207/10024G06T2207/20161
Inventor 杨建华
Owner BEIJING FORESTRY MACHINERY RES INST OF STATE FORESTRY ADMINISTRATION
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