Adding preview, description and metadata for Set #20.

README.md

@@ -330,3 +330,16 @@ Use built-in dataset `filter()` and `select()` to narrow down the loaded dataset
     - 17 train
     - 4 test
 * **Size**: 179.8 Mb
+
+
+## Set #20: Gosh, So Shiny! New Asphalt
+
+![preview of the files in Set #20](https://huggingface.co/datasets/texturedesign/td02_urban-surface-textures/resolve/main/docs/set20.webp)
+
+* **Description**:
+    - new asphalt with dark bitumen with embedded bright grey gravel
+    - mixed lighting, mostly in shadow with specular secondary light
+* **Number of Photos**:
+    - 13 train
+    - 3 test
+* **Size**: 108.7 Mb

test/metadata.jsonl

@@ -58,3 +58,6 @@
 {"file_name": "set19/19_162603.jxl", "set": 19}
 {"file_name": "set19/19_162632.jxl", "set": 19}
 {"file_name": "set19/19_162701.jxl", "set": 19}
+{"file_name": "set20/20230902_162915.jxl", "set": 20}
+{"file_name": "set20/20230902_162935.jxl", "set": 20}
+{"file_name": "set20/20230902_162959.jxl", "set": 20}

train/metadata.jsonl

@@ -211,3 +211,16 @@
 {"file_name": "set19/19_162719.jxl", "set": 19}
 {"file_name": "set19/19_162729.jxl", "set": 19}
 {"file_name": "set19/19_162735.jxl", "set": 19}
+{"file_name": "set20/20230902_162838.jxl", "set": 20}
+{"file_name": "set20/20230902_162842.jxl", "set": 20}
+{"file_name": "set20/20230902_162847.jxl", "set": 20}
+{"file_name": "set20/20230902_162852.jxl", "set": 20}
+{"file_name": "set20/20230902_162857.jxl", "set": 20}
+{"file_name": "set20/20230902_162902.jxl", "set": 20}
+{"file_name": "set20/20230902_162922.jxl", "set": 20}
+{"file_name": "set20/20230902_162929.jxl", "set": 20}
+{"file_name": "set20/20230902_162952.jxl", "set": 20}
+{"file_name": "set20/20230902_162956.jxl", "set": 20}
+{"file_name": "set20/20230902_163007.jxl", "set": 20}
+{"file_name": "set20/20230902_163014.jxl", "set": 20}
+{"file_name": "set20/20230902_163020.jxl", "set": 20}