Pre-processing: Encoding the video frames into compressed videos.

Installation

1. Install ffmpeg.

   sudo apt install ffmpeg
   

2. Build the x265 library for encoding.

   cd ./x265/build
   cmake ../source
   make -j
   

3. Build the libde265 library for decoding .

   cd ./libde265
   mkdir build
   cd ./build
   cmake ..
   make -j
   

Pre-processing

CamVid

1. Download the CamVid dataset: here
2. Download the original video sequences: here
3. After downloading the files above, your directories should look like:

   camvid_root
   ┣ test
   ┣ test_labels
   ┣ train
   ┣ train_labels
   ┣ val
   ┣ val_labels
   ┗ class_dict.csv
   
   camvid_sequence_root
   ┣ 01TP_extract.avi
   ┣ 0005VD.MXF
   ┣ 0006R0.MXF
   ┣ 0016E5.zip.001
   ┗ 0016E5.zip.002
   

4. Set ignored labels for CamVid dataset

   cp ./camvid-pre-process.py /path/to/camvid_root/
   cd /path/to/camvid_root/
   python ./camvid-pre-process.py
   

5. Decode the original videos into video frames.

   cp ./camvid_decode.sh /path/to/camvid_sequence_root/
   cd /path/to/camvid_sequence_root/
   bash ./camvid_decode.sh
   

6. Replace the camvid_root and camvid_sequence_root variables in ./generate_compressed_dataset_camvid.py. Run:

   python ./generate_compressed_dataset_camvid.py
   

7. After pre-processing, the directory of CamVid should be:

   camvid_sequence_root
   ┣ 3M-GOP12
   ┣ ┣ decoded_GOP12_dist_0
   ┣ ...
   ┣ ┣ frames
   ┣ ┣ MVmap_GOP12_dist_0
   ┣ ...
   ┣ ┗ MVmap_GOP12_dist_11
   ┣ frames
   ┣ ┣ 0001TP
   ┣ ┣ 0006R0
   ┣ ┣ 0016E5
   ┣ ┗ Seq05VD
   ┣ 01TP_extract.avi
   ┣ 0005VD.MXF
   ┣ 0006R0.MXF
   ┣ 0016E5.zip.001
   ┗ 0016E5.zip.002
   

Cityscapes

1. Download the Cityscapes dataset: GTFine and leftImg8bit
2. Download the original video sequences: leftImg8bit_sequence
3. After downloading the files above, your directories should look like:

   cityscapes_root
   ┣ GTFine
   ┣ ┣ test
   ┣ ┣ train
   ┣ ┗ val
   ┣ leftImg8bit
   ┣ ┣ test
   ┣ ┣ train
   ┣ ┗ val
   ┗ leftImg8bit_sequence
     ┣ test
     ┣ train
     ┗ val
   

4. Replace the cityscapes_root in ./generate_compressed_dataset_cityscapes.py. Run:

   python ./generate_compressed_dataset_cityscapes.py
   

5. After pre-processing, the directory of Cityscapes should be:

   cityscapes_root
   ┣ ...
   ┗ leftImg8bit_sequence
     ┣ 5M-GOP12
     ┣ ┣ decoded_GOP12_dist_0
     ┣ ...
     ┣ ┣ frames
     ┣ ┣ MVmap_GOP12_dist_0
     ┣ ...
     ┣ ┗ MVmap_GOP12_dist_11
     ┣ test
     ┣ train
     ┗ val