Update README.md

README.md

@@ -2,10 +2,22 @@
 
 This is the official dataset of OCTScenes (https://arxiv.org/abs//2306.09682). OCTScenes contains 5000 tabletop scenes with a total of 15 everyday objects. Each scene is captured in 60 frames covering a 360-degree perspective. 
 
-The 0-3099 scenes without segmentation annotation are for training, while 3100-3199 scenes with segmentation annotation in the OCTScnes-A dataset. The 0-4899 scenes without segmentation annotation are for training, while 4900-4999 with segmentation annotation in the OCTScnes-B dataset.
+The 0-3099 scenes without segmentation annotations are for training, while 3100-3199 scenes with segmentation annotations are for testing in the OCTScenes-A dataset. The 0-4899 scenes without segmentation annotations are for training, while 4900-4999 scenes with segmentation annotations are for testing in the OCTScenes-B dataset.
 
-We have three different resolutions for each scene: 128x128, 256x256 and 640x480. They are in `./128x128`,`./256x256`, and `./640x480` respectively. The name of each image is in the form `[scene_id]_[frame_id].png`. 
+We have images of three different resolutions for each scene: 128x128, 256x256 and 640x480. The name of each image is in the form `[scene_id]_[frame_id].png`. They are in `./128x128`,`./256x256`, and `./640x480` respectively. The images are compressed using `tar`, and the name of compressed files starts with the resolutions, such as '128_'. Please download all the compressed files, and use 'tar' instruction to decompress the files.
 
-The segmentation results are in `./128x128/segments_128.tar.gz`. Currently, we have the segmentations of scenes 3100-3199 and 4900-4999 with resolutions 128x128. The shape of all of the images is 1x128x128, and the name of each segmentation is in the form `[scene_id]_[frame_id].png`.The int number in each pixel represents the index of the object(ranges from 1 to 10, and 0 represents the background).
+For example, for the images with the resolution of 128x128, please download all the files starts with '128_', and then merge files into '128x128.tar.gz':
+
+```
+cat 128_* > 128x128.tar.gz
+```
+
+And then decompress the file:
+
+```
+tar xvzf 128x128.tar.gz
+``` 
+
+The segmentation results are in `./128x128/segments_128.tar.gz`. Currently, we have the segmentations of scenes 3100-3199 and 4900-4999 with resolutions 128x128. The shape of all of the images is 1x128x128, and the name of each segmentation is in the form `[scene_id]_[frame_id].png`. The int number in each pixel represents the index of the object (ranges from 1 to 10, and 0 represents the background).
 
 The repository currently only contains a 128x128 size dataset, and 256x256 and 640x480 size datasets will be available soon.