black and white thermal imaging drone photo of people walking on street at night for surveillance and security

thermal imaging drone surveillance night security black white urban street walking individuals people technology infrared nightvision monitor city building architecture safety observation shadow pavement sidewalk light monochrome contrast texture visual thermalvision anonymous detection guard patrol thermalcamera aerialview highangle protective research civilian defensiveness nighttime pathway photograph detailed clarity rooftops walls illumination surveillancetechnology visibility thermalsurveillance map scanning ai generated