Systematic review of existing, new and upcoming spectral imaging and multispectral imaging systems/ methods/ techniques / hyperspectral imaging and spectroscopy in endoscopy, focused mainly in urology and urological diagnosis. Comparison of spectral / multispectal imaging methods with existing endoscopic systems, conventional imaging and various diagnostic systems such as narrow band imaging, etc, again mainly focused in urology. Discuss also about fast and smart spectral imaging on machine learning methods and how it is applied in endoscopy and urolgy. There are no extra data
