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semantic_segmentation
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.readme 4d4d26ef04 Update README.md %!s(int64=6) %!d(string=hai) anos
data_annotated 43c442db27 Add example of semantic_segmentation %!s(int64=7) %!d(string=hai) anos
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README.md 12d05f436b Update README.md %!s(int64=6) %!d(string=hai) anos
labelme2voc.py eb58e964e3 Add labelme.utils.lblsave %!s(int64=6) %!d(string=hai) anos
labels.txt 43c442db27 Add example of semantic_segmentation %!s(int64=7) %!d(string=hai) anos

README.md

Semantic Segmentation Example

Annotation

labelme data_annotated --labels labels.txt --nodata

Convert to VOC-like Dataset

# It generates:
#   - data_dataset_voc/JPEGImages
#   - data_dataset_voc/SegmentationClass
#   - data_dataset_voc/SegmentationClassVisualization
./labelme2voc.py labels.txt data_annotated data_dataset_voc

Fig 1. JPEG image (left), PNG label (center), JPEG label visualization (right)

Note that the label file contains only very low label values (ex. 0, 4, 14), and 255 indicates the __ignore__ label value (-1 in the npy file).
You can see the label PNG file by following.

labelme_draw_label_png data_dataset_voc/SegmentationClassPNG/2011_000003.png