Add an option to save the corners of boxes in alternate format

[xvolks]

In the JSON file the boxes are saved in x, y, w, h format. An option to save the boxes as x1, y1, x2, y2 may help for some usages.

[ryouchinsa]

The JSON format is the simplified version of COCO. box = [x, y, width, height] http://mscoco.org/dataset/#download

The xml format is based on the PASCAL VOC format. box = [xmin, ymin, xmax, ymax] http://host.robots.ox.ac.uk/pascal/VOC/voc2007/devkit_doc_07-Jun-2007.pdf

Why do you want to use [x1, y1, x2, y2] in the JSON format?

[xvolks]

I use this project, for training and I did not manage do make PascalVOC import read the output of Rectlabel. So I wrote a parser/loader for JSON files of Rectlabel. I trained resnet50 with this and its predictions were random because of a mismatch between x,y,w,h and x1,x2,y1,y2. So I fixed the bug in my code, and to share my issue I've reported here, thinking that it could be useful for some users.

Actually, I do not need this feature, it was just an idea of enhancement.

[ryouchinsa]

Thanks for letting us know about the detailed situation. The problem of our xml format was there were no default "difficult" value. <difficult>0</difficult>

We checked with the data and code below. https://github.com/ryouchinsa/Rectlabel-support/tree/master/VOC2007_test https://github.com/yhenon/keras-frcnn/blob/master/keras_frcnn/pascal_voc_parser.py data_paths = [os.path.join(input_path, s) for s in ['VOC2007_test']] annot_path = os.path.join(data_path, 'JPEGImages/annotations') data_path, 'ImageSets', 'Main', 'val.txt')

In the next update, RectLabel saves the xml file with these default values. <pose>Unspecified</pose> <truncated>0</truncated> <difficult>0</difficult>

We submitted the new update to Apple. When the new update is released, we will let you know. Thank you.

[ryouchinsa]

The new update was released. RectLabel 1.31 Saves the PASCAL VOC format file with a default value for "pose", "truncated", and "difficult".