Efficient Camera Smoothing in Sequential Structure-from-Motion Using Approximate Cross-Validation

2008 ◽  
pp. 196-209 ◽  
Author(s):  
Michela Farenzena ◽  
Adrien Bartoli ◽  
Youcef Mezouar
Keyword(s):  
Structure From Motion ◽  
Cross Validation ◽  
Sequential Structure

A Sequential Structure from Motion Algorithm for Static Scenes Based on VR-Simulation

2013 ◽  
Vol 712-715 ◽  
pp. 2389-2392
Author(s):  
Hao Peng Wang ◽  
Xiao Jing Li ◽  
Tong Pan ◽  
Kai Zhao
Keyword(s):  
Structure From Motion ◽  
Feature Tracking ◽  
Dynamic Scenes ◽  
Multiple View Geometry ◽  
The Core ◽  
Reconstruction Scheme ◽  
Multiple View ◽  
Sequential Structure ◽  
Algebraic Concepts ◽  
Motion Method

The paper presented a conventional sequential Structure from Motion method, introduced the algebraic concepts and the core techniques used effectively. It is especially essential to comprehend the static scene based sequential of Structure from Motion is extended to a simultaneous segmentation and reconstruction scheme for dynamic scenes. The first outcome is the multiple view geometry, the second is the feature tracking and geometry initializing, and the last is self-calibration.

Item Bias Analysis of the Young Schema-Questionnaire for Psychopathology, Gender, and Educational Level

2011 ◽  
Vol 27 (1) ◽  
pp. 65-70 ◽  
Author(s):  
Marleen M. Rijkeboer ◽  
Huub van den Bergh ◽  
Jan van den Bout
Keyword(s):  
Educational Level ◽  
Cross Validation ◽  
Item Bias ◽  
Response Patterns ◽  
Dutch Population ◽  
Bias Analysis ◽  
Young Schema Questionnaire ◽  
Item Functioning ◽  
Item Level ◽  
Schema Questionnaire

This study examines the construct validity of the Young Schema-Questionnaire at the item level in a Dutch population. Possible bias of items in relation to the presence or absence of psychopathology, gender, and educational level was analyzed, using a cross-validation design. None of the items of the YSQ exhibited differential item functioning (DIF) for gender, and only one item showed DIF for educational level. Furthermore, item bias analysis did not identify DIF for the presence or absence of psychopathology in as much as 195 of the 205 items comprising the YSQ. Ten items, however, spread over the questionnaire, were found to yield relatively inconsistent response patterns for patients and nonclinical participants.

CROSS-VALIDATION IS NEEDED

1972 ◽  
Vol 17 (2) ◽  
pp. 85-86
Author(s):  
RICHARD F. Q. JOHNSON
Keyword(s):  
Cross Validation
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