HSHR

Hypergraph-Guided Self-Supervised Hashing-Encoding Retrieval

Method and codes of the paper: Hypergraph-Guided Slide-Level Histology Retrieval with Self-Supervised Hashing.

Requirement

• Python (3.7.0)
  • Openslide-python (1.1.1)
  • Pytorch (1.8.1)
  • scikit-image (0.16.2)
  • scikit-learn (1.0.2)

Usage

THe following steps show how to run HSHR in your device.

Step 1: Data Organization

Make the ./WSI folder, download whole slide images there, and simply organize them into the following structure.

WSI
└── SUBTYPE_1
    └── TCGA-XXXX-PID01-XXXX-XXXX.svs
        TCGA-XXXX-PID01-XXXX-XXXX.svs
        TCGA-XXXX-PID02-XXXX-XXXX.svs
        TCGA-XXXX-PID03-XXXX-XXXX.svs
    SUBTYPE_2
    └── TCGA-XXXX-PID04-XXXX-XXXX.svs
        TCGA-XXXX-PID04-XXXX-XXXX.svs
        TCGA-XXXX-PID05-XXXX-XXXX.svs
        TCGA-XXXX-PID05-XXXX-XXXX.svs
    SUBTYPE_3
    └── TCGA-XXXX-PID06-XXXX-XXXX.svs
        TCGA-XXXX-PID07-XXXX-XXXX.svs
        TCGA-XXXX-PID08-XXXX-XXXX.svs

Step 2: Preprocessing

To preprocess the raw WSIs, you need to specify the following arguments:

• SVS_DIR: The path of your WSI datasets.
• RESULT_DIR: A path to save your preprocessed results.
• TMP: The path to save some necessary tmp files.
• DENSE: Whether densely cropping patches or sampling patches.
• SAVE_ALL: Also saving features and coordinates.

  python preprocess.py --SVS_DIR THE/PATH/OF/YOUR/WSI/DATASETS --RESULT_DIR A/PATH/TO/SAVE/YOUR/PREPROCESSED/RESULTS --TMP THE/PATH/TO/SAVE/SOME/NECESSARY/TMP/FILES

Step 3: SSL Encoder Training

To train your SSL hash encoder, you need to specify the following arguments:

• RESULT_DIR = The path that saves your preprocessed results
• TMP = The path to save some necessary tmp files.
• MODEL_DIR = A path to save your trained hash encoder model.
• DATASETS = a list of datasets to test the performance of retrieval

python ssl_encoder_training.py --RESULT_DIR A/PATH/TO/SAVE/YOUR/PREPROCESSED/RESULTS --TMP THE/PATH/TO/SAVE/SOME/NECESSARY/TMP/FILES --MODEL_DIR = A/PATH/TO/SAVE/YOUR/TRAINED/HASH/ENCODER/MODEL --DATASETS SUBTYPE_A SUBTYPE_B SUBTYPE_C

Step 4: Hypergraph-guided Retrieval

To retrieve with HSHR, you need to specify the following arguments:

• MODEL_DIR = A path to save your trained hash encoder model.
• DATASETS = a list of datasets to test the performance of retrieval
• TMP = The path to save some necessary tmp files.
• RESULT_DIR = The path that saves your preprocessed results

  python hypergraph_retrieval.py --MODEL_DIR = A/PATH/TO/SAVE/YOUR/TRAINED/HASH/ENCODER/MODEL --DATASETS SUBTYPE_A SUBTYPE_B SUBTYPE_C --RESULT_DIR A/PATH/TO/SAVE/YOUR/PREPROCESSED/RESULTS --TMP THE/PATH/TO/SAVE/SOME/NECESSARY/TMP/FILES