Data Annotation

Bounding box Label

• Annotation file format:

 Img_W Img_H xmin xmax ymin ymax

• What we have collected:

 router
 guitar
 swivel chair
 electric organ
 vibes

• What we plan to collect:

 "device" and "equipment" of instrumentality (instrumentation), like computer, mouse, stapler, ...
 

• Problems of Current Approach

1. some images are too large to be displayed within the screen, so have bad annotation.
2. the "null" string in result should be replaced by -1 -1 -1 -1
3. the following plot is that, if each image has a certain number of annotations (x axis), how many images can be inferred a true bounding box.

By the plot, we suggest using 6 annotations for each image to label.

• Change random display of images to sequentially presenting a list of images to workers. Store a local counter in a text file or database.

-Need to consider keep using text files or switching to database

View Point Label

• Ask labelers to do a selection with each branch to be a thumbnail of a frame sampled from video sequences.

We plan to sample those frames with equally distributed angles.