Search results for "Image scale"
showing 3 items of 3 documents
The stereographic coordinate system
2003
noRANSAC for fundamental matrix estimation
2011
The estimation of the fundamental matrix from a set of corresponding points is a relevant topic in epipolar stereo geometry [10]. Due to the high amount of outliers between the matches, RANSAC-based approaches [7, 13, 29] have been used to obtain the fundamental matrix. In this paper two new contributes are presented: a new normalized epipolar error measure which takes into account the shape of the features used as matches [17] and a new strategy to compare fundamental matrices. The proposed error measure gives good results and it does not depend on the image scale. Moreover, the new evaluation strategy describes a valid tool to compare diffe rent RANSAC-based methods because it does not re…
Dental procedures cause stress in children with cerebral palsy?
2021
Background To evaluate the level of stress during dental care in children and preadolescents with cerebral palsy through biological and psychological parameters. Material and Methods A total of 38 children aged 7 to 12 years were divided into two groups: one with 18 children with cerebral palsy and the other with 20 healthy children (control group). Saliva was noninvasively collected before and after dental care to analyze salivary biomarkers. The Frankl Behavior Scale and the Facial Image Scale were applied. Results After the dental procedure, cortisol levels were significantly higher (p = 0.02) in the cerebral palsy group than in the control group. Salivary alpha-amylase was not significa…