Results 231 to 240 of about 189,557 (261)
Some of the next articles are maybe not open access.
Accuracy of three-dimensional measurement using a single image
Optical Engineering, 1997The accuracy of 3-D measurement using a single image of a four-point coplanar target of known size is studied. The factors that influence accuracy are analyzed and experimental techniques are used to establish their individual effect on accuracy. Experiments show that the four-point coplanar target has two solutions for real images and that mixing ...
openaire +2 more sources
Dimensional Accuracy of Two‐Step Impressions Measured on Scanned Casts in CAD
Journal of Prosthodontics, 2015AbstractPurposeThe purpose of the study was to find out how light‐body impression material thickness influences the horizontal dimensional accuracy of casts examined on a scanned model.Materials and MethodsCustomized manikin mandibles were used for impression taking with a dual‐phase impression method.
Baráth Zoltán Lajos +3 more
openaire +3 more sources
The measurement of pointing accuracy of two-dimensional scan mirror
SPIE Proceedings, 2015Abstract The observation accuracy of space camera targ eted on ground objects is directly affected by th e pointing deviation of the two dimensional scan mirror. A plane model of the scan mirrors normal trajectory is established when scan mirror is rotating along the rolling axis while the pitching axis remain s still.
Hui Xing, Chao An, Junru Song, Xuhua He
openaire +1 more source
Accuracy and Precision of In Vitro Volumetric Measurements by Three-Dimensional Sonography
Investigative Radiology, 1996A radiologist often wishes to measure organ volume or monitor changes in internal lesion volume during treatment. If this can be determined via three-dimensional ultrasound, the relative simplicity of the procedure and the decreased cost and known risks to the patient would make this method an attractive alternative to other modalities.Three ...
J, Wong +3 more
openaire +2 more sources
Three-dimensional computed tomography measurement accuracy of varying Hill-Sachs lesion size
Journal of Shoulder and Elbow Surgery, 2018The glenoid track concept has been proposed to correlate shoulder stability with bone loss. Accurate assessment of Hill-Sachs lesion size preoperatively may affect surgical planning and postoperative outcomes; however, no measurement method has been universally accepted.
Anthony, Ho +3 more
openaire +2 more sources
Accuracy of 3-dimensional Analysis of Ureteral Stone Measurement
Journal of the American College of Surgeons, 2023Shyam Patnaik +3 more
openaire +1 more source
Measurements of dimensional accuracy using linear and scanning profile techniques.
The International journal of prosthodontics, 1992Various measurement methods have been described for the determination of dimensional accuracy and stability of denture base materials. This investigation introduces a computerised coordinate measuring machine (CCMM) and compares it with two methods routinely used for assessment of the accuracy of fit of denture base materials.
A, Harrison, R, Huggett, A, Zissis
openaire +1 more source
Direct measurement of dimensional accuracy with three denture-processing techniques.
The International journal of prosthodontics, 1992The Michigan Computer-Graphics Coordinate Measurement System (MCGCMS) was used to determine the dimensional accuracy of dentures processed by three different techniques: conventional heat compression, microwave, and visible-light activation. Standardized dentures were fabricated from casts made in an RTV silicone mold.
M D, Turck +3 more
openaire +1 more source
Low-dimensional wide-bandgap semiconductors for UV photodetectors
Nature Reviews Materials, 2023Ziqing Li, Xiaosheng Fang
exaly