Sökning: "Knot detection"
Visar resultat 1 - 5 av 9 avhandlingar innehållade orden Knot detection.
1. Pith location and annual ring detection for modelling of knots and fibre orientation in structural timber : A Deep-Learning-Based Approach
Sammanfattning : Detection of pith, annual rings and knots in relation to timber board cross-sections is relevant for many purposes, such as for modelling of sawn timber and for real-time assessment of strength, stiffness and shape stability of wood materials. However, the methods that are available and implemented in optical scanners today do not always meet customer accuracy and/or speed requirements. LÄS MER
2. Computed tomography of sawlogs : knot detection and sawing optimization
Sammanfattning : Branches on trees introduce defects on sawn timber called knots. By scanning sawlogs using computed tomography, knots can be detected and accounted for so that the sawing process can be optimized with respect to outgoing product value. LÄS MER
3. Computed tomography of sawlogs : knot detection and sawing optimization
Sammanfattning : .... LÄS MER
4. Wood fingerprint recognition and detection of thin cracks
Sammanfattning : The first part of this thesis deals with recognition of wood fingerprints extracted from timber surfaces. It presents different methods to track sawn wood products through an industrial process using cameras. LÄS MER
5. Segmentation of knots : a problem in 3D X-ray scanning of logs
Sammanfattning : This thesis investigates the possibilities of using 3D X-ray tomography to detect and segment knots in logs. In the sawmill process this should be done previously to the sawing the log into boards. LÄS MER