Overcome issue with None in sequences

.gitignore

@@ -1,2 +1,3 @@
 .idea
 altos
+*.tar.gz

data/dev/metadata.jsonl

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:18761d7264695244282cf1844818b5c0fc4da85f512be426e0dd7d31f9d14f84
-size 4739767
+oid sha256:6888e0bf991ed356de2cc4650b3fb57a079ec86e43ab212caed9012b4450625a
+size 4736329

data/test/metadata.jsonl

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:11e3dcff16fb0b2cc23479810aefbb53bae38e31df30bcc5423afef72b2f9f2e
-size 6090128
+oid sha256:8f298de3008445f048877d1c4e5576204a5b8e38f9bfa6a42cb73a76292b333d
+size 6087022

data/train/metadata.jsonl

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:de554e3cb610117a380be15806122cb400219757ba769f2adb3440099dcbf31c
-size 35567787
+oid sha256:71b19924362cbc2036efa09430b0e6e692b17df6d0f8b22b767d3a26d10496f2
+size 35541933

src/alto.py

@@ -3,7 +3,7 @@ import os
 from datasets import load_dataset
 from dataclasses import dataclass, field
 import tqdm.auto as tqdm
-from typing import List, Dict, Set
+from typing import List, Dict
 from jinja2 import Environment, FileSystemLoader
 from shapely.geometry import Polygon
 import itertools
@@ -12,7 +12,7 @@ import itertools
 env = Environment(loader=FileSystemLoader('.'))
 template = env.get_template('template.xml')
 
-ds = load_dataset("CATMuS/medieval-segmentation")
+ds = load_dataset("../data")
 
 RATIO = .05
 
@@ -89,28 +89,27 @@ class Block:
 
 
 for split in ds:
-    print(f"Split: {split}")
     os.makedirs(f"altos/{split}", exist_ok=True)
     for image_idx, image in enumerate(tqdm.tqdm(ds[split])):
         blocks: Dict[str, Block] = {}
         tags: Dict[str, Tag] = {}
-        print(image)
-        for idx, bbox, polygons, category, typ, parent, baseline in zip(*[
-            image["objects"][key]
-            for key in ['id', 'bbox', 'polygons', 'category', 'type', 'parent', "baselines"]
-        ]):
-            if category and category not in tags:
-                tags[category] = Tag(f"LABEL_{len(tags)}", category, typ)
-
-            if typ == "block":
-                blocks[idx] = Block(idx, bbox, polygons, category)
+        objs = image["objects"]
+        for i, idx in enumerate(objs["id"]):
+            if objs["category"][i] and objs["category"][i] not in tags:
+                tags[objs["category"][i]] = Tag(f"LABEL_{len(tags)}", objs["category"][i], objs["type"][i])
+
+            if objs["type"][i] == "block":
+                blocks[idx] = Block(idx, objs["bbox"][i], objs["polygons"][i], objs["category"][i])
             else:
-                if parent == None:
-                    blocks[None] = Block(None, [], [], "")
-                blocks[parent].lines.append(
-                    Line(idx, bbox, polygons, category)
+                if objs["parent"][i] == "":
+                    blocks[""] = Block(None, [], [], "")
+                if objs["baseline"][i] is None:
+                    print(f"Line broken ? {image['shelfmark']} {idx} {objs['polygons'][i]}")
+                    continue
+                blocks[objs["parent"][i]].lines.append(
+                    Line(idx, objs["bbox"][i], objs["polygons"][i], objs["category"][i], objs['baseline'][i])
                 )
-        image["image"].save(f"./altos/{split}/image-{image_idx:04}.jpg")
+        image["image"].convert('RGB').save(f"./altos/{split}/image-{image_idx:04}.jpg")
         with open(f"./altos/{split}/image-{image_idx:04}.xml", "w") as f:
             f.write(
                 template.render(
@@ -120,4 +119,3 @@ for split in ds:
                     tags=tags
                 )
             )
-        break

src/template.xml

@@ -24,7 +24,7 @@
                 {% for bid, block in blocks.items() %}
                 <TextBlock ID="{{ bid or 'anonymous' }}" {%if block.category%}TAGREFS="{{tags[block.category].idx}}" {% endif%} {% if block.bbox %} HPOS="{{ block.hpos }}" VPOS="{{ block.vpos }}" WIDTH="{{ block.width }}" HEIGHT="{{ block.height }}" {% endif %}>
                     {%-if block.bbox %}<Shape><Polygon POINTS="{{ block.polygons|join(" ") }}" /></Shape>{% endif -%}
-                    {% for line in block.lines %}<TextLine ID="{{ line.idx }}" {%if block.category%}TAGREFS="{{tags[line.category].idx}}" {% endif%}  HPOS="{{ line.hpos }}" VPOS="{{ line.vpos }}" WIDTH="{{ line.width }}" HEIGHT="{{ line.height }}" BASELINE="{{line.baseline}}">
+                    {% for line in block.lines %}<TextLine ID="{{ line.idx }}" {%if block.category%}TAGREFS="{{tags[line.category].idx}}" {% endif%}  HPOS="{{ line.hpos }}" VPOS="{{ line.vpos }}" WIDTH="{{ line.width }}" HEIGHT="{{ line.height }}" BASELINE="{{line.baseline|join(" ")}}">
                         <Shape><Polygon POINTS="{{ line.simple_polygon|join(" ") }}" /></Shape>
                     </TextLine>
                     {% endfor %}