Difference between revisions of "Data Annotation"
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| − | + | ==Bounding box Label== | |
| − | + | * Annotation file format: | |
Img_W Img_H xmin xmax ymin ymax | 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 | * Problems of Current Approach | ||
| − | # some images are too large | + | # some images are too large to be displayed within the screen, so have bad annotation. |
# the "null" string in result should be replaced by -1 -1 -1 -1 | # the "null" string in result should be replaced by -1 -1 -1 -1 | ||
| − | [[image:valid_img_ratio_with_respect_to_num_of_annotation.png]] | + | # 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. |
| + | |||
| + | [[image:valid_img_ratio_with_respect_to_num_of_annotation.png|800px]] | ||
| + | Attach:valid_img_ratio_with_respect_to_num_of_annotation.png | ||
| + | |||
| + | 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. | ||
Latest revision as of 19:42, 5 January 2009
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
- some images are too large to be displayed within the screen, so have bad annotation.
- the "null" string in result should be replaced by -1 -1 -1 -1
- 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.
Attach:valid_img_ratio_with_respect_to_num_of_annotation.png
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.
