lpr

LPR is an initialism that can refer to several concepts across different fields. The two most common uses are License Plate Recognition in computer vision and laryngopharyngeal reflux in medicine.

License Plate Recognition (LPR) refers to automated systems that detect and read vehicle license plates in still images or video streams. The typical pipeline includes plate localization, character segmentation, optical character recognition, and post-processing to ensure reliable data. Advances in LPR have been driven by machine learning and deep neural networks, enabling end-to-end systems that can handle varying plate designs, languages, and lighting conditions. Applications include traffic law enforcement, toll collection, parking management, and border control. Performance is influenced by image quality, camera angle, motion blur, weather, and the legibility of plates.

Laryngopharyngeal reflux (LPR) is a medical condition in which gastric contents reflux past the upper esophageal sphincter to irritate the larynx and pharynx. It is distinct from gastroesophageal reflux disease (GERD) in that typical heartburn is not always present, and symptoms may include chronic cough, throat clearing, hoarseness, globus sensation, and dysphagia. Diagnosis often involves clinical assessment, fiberoptic laryngoscopy, and pH or impedance monitoring; response to therapy may also inform diagnosis. Management focuses on lifestyle modifications (weight management, dietary changes, head-of-bed elevation), and acid suppression therapy such as proton pump inhibitors, with surgical options limited to select cases.