Update README.md

README.md

@@ -33,7 +33,7 @@ It is organised into four folders, each named after a season and containing 35,7
 These images maintain a one-to-one correspondence across folders. 
 For each traverse, the corresponding ground truth data is available in designated .csv files. 
 
-We have also included a file named `nordland_imageNames.txt`, which offers a filtered list of images. 
+We have also included a file named `nordland_imageNames.txt`, which offers a filtered list of images, containing 27,592 images. 
 This selection excludes segments captured when the train's speed fell below 15 km/h, as determined by the accompanying GPS data.