Update README.md

README.md

@@ -33,14 +33,15 @@ Renders a Star Wars like text crawl using nanovg (OpenGL). Encodes on the GPU.
 https://user-images.githubusercontent.com/287266/204157553-758adaeb-e9b8-48eb-bc09-8098a5379d2b.mp4
 
 ## optflow-demo
-My take on a optical flow visualization on top of a video. Uses nanovg for rendering (OpenGL), calculates the optical flow (OpenCL) and decodes/encodes on the GPU.
+My take on a optical flow visualization on top of a video. Uses background subtraction (OpenCL) to isolate areas with motion, detects features to track (OpenCL), calculates the optical flow (OpenCL), uses nanovg for rendering (OpenGL) and post-processes the video (OpenCL). Decodes/encodes on the GPU (VAAPI).
 
 https://user-images.githubusercontent.com/287266/202174513-331e6f08-8397-4521-969b-24cbc43d27fc.mp4
 
 ## pedestrian-demo
-Pedestrian detection using HOG/SVM and non-maximal suppression. Uses nanovg for rendering (OpenGL), detects using a SVM (OpenCL) and decodes/encodes on the GPU. Note: Detection rate is not impressive and depends highly on the video.
+Pedestrian detection using HOG with a linear SVM and non-maximal suppression. Uses nanovg for rendering (OpenGL), detects using a linear SVM (OpenCL), filters resuls using NMS (CPU). Decodes/encodes on the GPU (VAAPI). 
+Note: Detection rate is not very impressive and depends highly on the video.
 
-https://user-images.githubusercontent.com/287266/204364376-e08a4943-17a4-408f-a5b0-bfd95ffc44ae.mp4
+https://user-images.githubusercontent.com/287266/204570888-9bf48c6e-3422-4fce-94e4-27a98db76dea.mp4
 
 # Instructions
 You need to build the most recent 4.x branch of OpenCV.