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Table 2 Description of the CCPD dataset

From: Performance enhancement method for multiple license plate recognition in challenging environments

Category Conditions Input image resolution (pixels) No. of images
Base Vehicles on roads with one license plate per image 720 × 1160 199,996
DB Images of vehicle in extreme bright and low light conditions 720 × 1160 10,132
FN Vehicle images were taken from far as well as closeup to cover various LP sizes 720 × 1160 20,976
Rotate Vehicles images with angular views 720 × 1160 10,053
Blur Blurriness is introduced due to the movement of the camera 720 × 1160 20,611
Weather Vehicles images taken under diverse weather conditions 720 × 1160 9999
Challenge Most challenging images include unconstrained illuminations and weather conditions along with images having multiple image processing problems (blurriness, size of LP, glare, etc.) 720 × 1160 50,003
Tilt Vehicles images with angular views 720 × 1160 30,216