Fig. 4
From: Exploiting textures for better action recognition in low-quality videos
Response of detectors when videos are downsampled spatially and temporally. Videos on the first row are using Harris3D detector and videos on second row are using warped flow estimation based feature tracking. The videos in columns 1, 2, and 3 represents the baseline, half resolution of the baseline, and one-third resolution of the baseline, respectively, while columns 4 and 5 represents one-half and one-third frame rate of baseline, respectively