Update README.md

README.md

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 license: apache-2.0
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+# MFQEv2 Dataset
+
+For some video enhancement/restoration tasks, lossless reference videos are necessary.
+
+We open-source the dataset used in our [MFQEv2 paper](https://arxiv.org/abs/1902.09707), which includes 108 lossless YUV videos for training and 18 test videos recommended by [ITU-T](https://ieeexplore.ieee.org/document/6317156).
+
+## 1. Content
+
+- 108 lossless YUV videos for training.
+- 18 lossless YUV videos for test, recommended by ITU-T.
+- An HEVC compression tool box.
+
+43.1 GB in total.
+
+## 2. Download Raw Videos
+
+[[Dropbox]](https://www.dropbox.com/sh/tphdy1lmlpz7zq3/AABR4Qim-P-3xGtouWk6ohi5a?dl=0)
+
+or [[百度网盘 (key: mfqe)]](https://pan.baidu.com/s/1oBZf75bFGRanLmQQLAg4Ew)
+
+## 3. Compress Videos
+
+We compress both training and test videos by [HM](https://hevc.hhi.fraunhofer.de/) 16.5 at low delay P (LDP) mode with QP=37. The video compression toolbox is provided at the dataset folder.
+
+We will get:
+
+```tex
+MFQEv2_dataset/
+├── train_108/
+│   ├── raw/
+│   └── HM16.5_LDP/
+│       └── QP37/
+├── test_18/
+│   ├── raw/
+│   └── HM16.5_LDP/
+│       └── QP37/
+├── video_compression/
+│   └── ...
+└── README.md
+```
+
+### Ubuntu
+
+1. `cd video_compression/`
+2. Edit `option.yml`.
+3. `chmod +x TAppEncoderStatic`
+4. `python unzip_n_compress.py`
+
+### Windows
+
+1. Unzip `train_108.zip` and `test_18.zip` manually!
+2. `cd video_compression\`
+3. Edit `option.yml` (e.g., `system: windows`).
+4. `python unzip_n_compress.py`
+
+## 4. Citation
+
+If you find this helpful, please star and cite:
+
+```tex
+@article{2019xing,
+	doi = {10.1109/tpami.2019.2944806},
+	url = {https://doi.org/10.1109%2Ftpami.2019.2944806},
+	year = 2021,
+	month = {mar},
+	publisher = {Institute of Electrical and Electronics Engineers ({IEEE})},
+	volume = {43},
+	number = {3},
+	pages = {949--963},
+	author = {Zhenyu Guan and Qunliang Xing and Mai Xu and Ren Yang and Tie Liu and Zulin Wang},
+	title = {{MFQE} 2.0: A New Approach for Multi-Frame Quality Enhancement on Compressed Video},
+	journal = {{IEEE} Transactions on Pattern Analysis and Machine Intelligence}
+}
+```