It appears you don't have support to open PDFs in this web browser. To view this file, Open with your PDF reader
Abstract
This paper has the purpose of presenting a study to determine the accuracy of a method for image measurement called Null Detector. In this new method, instead of determining the distance between two borders by counting pixels or by using subpixel approximations, the image itself is shifted and the border of the object to be measured is acquired in different points of the image. By using numerical adjustments for a specific point of the image, the real location for the border is found. The advantage of this method is that the pixel length does not need to be calibrated since it does not involve counting pixels.
You have requested "on-the-fly" machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Show full disclaimer
Neither ProQuest nor its licensors make any representations or warranties with respect to the translations. The translations are automatically generated "AS IS" and "AS AVAILABLE" and are not retained in our systems. PROQUEST AND ITS LICENSORS SPECIFICALLY DISCLAIM ANY AND ALL EXPRESS OR IMPLIED WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES FOR AVAILABILITY, ACCURACY, TIMELINESS, COMPLETENESS, NON-INFRINGMENT, MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Your use of the translations is subject to all use restrictions contained in your Electronic Products License Agreement and by using the translation functionality you agree to forgo any and all claims against ProQuest or its licensors for your use of the translation functionality and any output derived there from. Hide full disclaimer
Details
1 Fluminense Federal University - UFF; Mechanical Engineering Department - Laboratory of Dimensional and Computational Metrology Passo da Pátria Street, 156 - Niterói - Rio de Janeiro - Brazil; National Institute of Metrology, Quality and Technology - Inmetro Nossa Senhora das Graças Avenue, 50 - Xerém - Duque de Caxias - Rio de Janeiro - Brazil
2 National Institute of Metrology, Quality and Technology - Inmetro Nossa Senhora das Graças Avenue, 50 - Xerém - Duque de Caxias - Rio de Janeiro - Brazil
3 Fluminense Federal University - UFF; Mechanical Engineering Department - Laboratory of Dimensional and Computational Metrology Passo da Pátria Street, 156 - Niterói - Rio de Janeiro - Brazil