ABSTRACT
This paper recalls one of the most critical problems for the area of computer vision, the automatic location of a single camera. Today, several robotic devices rely on technologies other than visual information to perform self-localization. An artificial optical system will significantly benefit from knowing its location within a three-dimensional world since this is a crucial step to approach other complex tasks. In this paper, we will show how to compute the position of the camera through an uncalibrated method making use of projective properties, the projection model of the camera, and some reference points. We introduce a simple yet powerful way to detect coded targets in photographic images. Then, we describe an uncalibrated approach used to identify the location of a camera in three-dimensional space. The experiments carried out confirm the validity of our proposal.
ABSTRACT
Galectins are a family of proteins with affinity for ß-galactosides and their expression correlates with overall survival (OS) in several cancers. However, in breast cancer their prognostic potential is unclear. In this study we performed a meta-analysis to clarify the prognostic value of galectin expression in breast cancer and to identify sources of heterogeneity. For this purpose, we performed a search of related publications in PubMed, Central-Conchrane, Web of Science database, OVID-EMBASE, Scope and EBSCOhost until November 2021.Thirteen articles were included with a total of 2700 patients. High galectin expression was found not to correlate with OS in breast cancer (HR = 1.11, 95% CI 0.93-1.31). In the case of galectin-3, correlation with OS was observed when performing subgroup analysis by cellular localization (HR = 0.59, 95% CI 0.36-0.94 for cytoplasmic and HR = 1.82, 95% CI 1.00-3.29 for cytoplasmic plus nuclear). Galectin-7 correlates with DFS/PFS/DSS (HR = 2.43; 95% CI 1.36-4.31). Finally, galectin-3 correlates with some clinicopathological features such as lymph node metastasis, estrogen receptor expression and age. In conclusion, galectin-3 correlates with OS in breast cancer when cellular localization is considered while galectin-7 correlates with DFS/PFS/DSS. The cellular localization of galectins should be as fundamental aspect to be determined in future studies.