Statistical Asymmetrical Histogram Stretching for Contrast Enhancement in Chest X-ray Images for Pneumonia Detection. - Rafael Alejandro Cruz Ovando; Salvador Eugenio Ayala-Raggi; Angel Ernesto Picazo-Castillo; Aldrin Barreto-Flores; José Francisco Portillo-Robledo (Computación y Sistemas (CyS), 2025)