Download or read book Hardwood Lumber Grading Program written by Weicheng Zhou and published by . This book was released on 2004 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hardwood lumber is a major forest product, and board grading is an important part of its manufacturing and marketing. Computer grading programs have been used to train graders and to grade lumber for board data banks, but they have not been used to machine-grade boards in an industrial environment because of their slow performance. The Hardwood Lumber Grading Program (HLGP) was developed to quickly estimate a board's grade according to the National Hardwood Lumber Association rules by employing a pair-wise heuristic adopted from a separate board cut-up program. This paper describes how HLGP, using a board's size and defect data, locates the board's non-conflicting, clear-wood regions, uses them to calculate the yield, compares the board's size and defects with the limitations in the grading rules, and then assigns a grade. It also discusses how the original pair-wise algorithm was modified to expand the solution space without introducing too large a time complexity. Using a large board set that had been extensively evaluated both manually and by the most widely recognized computer grading program, HLGP correctly graded 1,289 out of the 1,581 boards. This translates into a misclassification rate of 18 percent, which is too high for industrial applications. However, HLGP averaged only less than a second to grade a board creating ample opportunity to improve the algorithm's accuracy before increased execution time becomes a problem.

Download or read book The Grading of Hardwoods written by Charles N. Perrin and published by . This book was released on 1923 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Computer program for grading hardwood lumber written by L. Galiger and published by . This book was released on 1971 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Grading Hardwood Lumber by Computer written by Hiram Hallock and published by . This book was released on 1971 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Grading Hardwood Lumber by Computer written by Hiram Hallock and published by . This book was released on 1971 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: The computer program described in the report is part of a system being developed to automate the decision-making process in a sawmill. The function of this program is to simulate the grading of hardwood lumber according to the rules established by the National Hardwood Lumber Association. The grading program is being used as an evaluation tool to optimize lumber values at the edger and trimmer in a hardwood sawmill. The programming language used is 3600 Fortran. Processing was done on a Control Data Corporation 3600 computer. (Author).

Download or read book OPTIGRAMI written by David G. Martens and published by . This book was released on 1985 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: S2With rapidly increasing lumber prices and shortages of some grades and species, the furniture industry must find ways to use its hardwood lumber resource more efficiently. A computer program called OPTlGRAMI is designed to help managers determine the best lumber to use in producing furniture parts. OPTlGRAMl determines the least-cost grade mix of lumber required to produce a given cutting order of dimension parts. If the optimum grade mix is not available, the program can determine the best alternatives. It also can be useful in procurement and allocation planning. A description of the program and examples of its use are included.S3.

Download or read book A guide to hardwood grading written by United States. Forest Service and published by . This book was released on 1965 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Illustrated Guide to Hardwood Lumber Grades written by and published by . This book was released on 1989 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hardwood Log Grades for Standard Lumber written by Coleman L. Vaughan and published by . This book was released on 1966 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Tutorial for Grading Aspen Birch and Other Canadian Hardwoods written by Eugene M. Wengert and published by Forestry Canada. This book was released on 1989 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Simplified Guidelines to Hardwood Lumber Grading written by Walton R. Smith and published by . This book was released on 1967 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Hardwood Log Grading Handbook written by Adam M. Taylor and published by . This book was released on 2007 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Introduction to the Grading and Measurement of Hardwood Lumber written by National Hardwood Lumber Association and published by . This book was released on 1971 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hardwood Log Grades for Standard Lumber and how to Apply Them written by and published by . This book was released on 1949 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Introduction to Grading Hardwood Lumber written by National Hardwood Lumber Association and published by . This book was released on 1994 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Illustrated Hardwood Lumber Grading Manual written by Dusan Susnjar and published by . This book was released on 2019-11-27 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes examples of grading according both to Standard Grades Chart and Walnut Grades Chart, as well as Defect Grading of Walnut Lumber. Great for beginners, but also for those who wants to expand current knowledge in grading of hardwood lumber.

Download or read book American Hardwood Lumber Grading written by and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: