Tracking results

Data file formats

The data

Mpeg visualisations

Download the random access MPEG player (updated Tue Oct 22 13:24:30)

About the files

1. The camera view image

   e.g. 02560.pgm.gz
   

   This file is a (compressed) pgm image of the tracked objects (people and cars) rendered onto the camera view plane. The image illustrates the relative depths used by the system for occlusion handling. Each object is rendered by a greylevel between 0 and 255. For each tracked person there is a reference number or label. The greylevel used to render a person is related to the reference number using ...

   greylevel = 128 + (ref_no & 127)

   Hence people will appear lighter than cars (with a greylevel > 127). To view an image use
   'gunzip -c 00001.pgm.gz | xv -gamma 5 -'

2. The ascii data file

   e.g. 02560.dat.gz
   (click here to see example file contents)
   This file contains data for each tracked person in the image. Specifically, the file consists of a set of tags ...
   
   • label n
     - the reference number for this tracked person
   • wp_pos (x_w,y_w)
     - the world plane coordinates of the person's feet
   • wp_cov xx xy yy
     - the covariance matrix elements of the estimated world plane coordinates
   • image_origin (x_i,y_i)
     - the image plane coordinates of the silhouette origin
   • image_width w
   • image_height h
   • control_points (x₀,y₀) (x₁,y₁) ... (x₃₉,y₃₉)
     - the image plane coordinates of the spline control points that represent the silhouette shape

MPEG visualisations

1. Results of part A (frames 0001 - 3999) (9Meg) -
   
2. Results of part B (frames 7500 - 14999) (15Meg) -
   
   The MPEG's contain a split screen view of ...
   • The camera view images of the tracked people and cars. The images have been mapped into colour for visualisation purposes.
   • The outlines of all tracked people superimposed on the raw images. Each spline is rendered ignoring any known or unknown occlusions.

Part A (Leeds frame numbers 00001 - 03999)

• tar file containing gzip'ed camera view images
• tar file containing gzip'ed ascii data (ground plane origin etc for each tracked person)

Part B (Leeds frame numbers 7500 - 14999)

• images (frames 7500 to 8999)
• ground plane data (frames 7500 to 8999)
• images (frames 9000 to 10999)
• ground plane data (frames 9000 to 10999)
• images (frames 11000 to 12999)
• ground plane data (frames 11000 to 12999)
• images (frames 13000 to 14999)
• ground plane data (frames 13000 to 14999)