poker-table-perception-eval / eval_mirage.py
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"""Score Mirage (Cactus) on the synthetic poker table dataset.
Modes: "describe" (objects + OCR text lines) and, if the Mirage API supports it,
"forms" scoring over card enums. Reports: card-read accuracy (OCR text that
matches a card glyph set), card-bbox recall via IoU matching to ground truth,
pot-text read rate, and per-image timing.
"""
import argparse
import json
import re
import time
from pathlib import Path
def iou(a, b):
ax0, ay0, ax1, ay1 = a
bx0, by0, bx1, by1 = b
ix = max(0, min(ax1, bx1) - max(ax0, bx0))
iy = max(0, min(ay1, by1) - max(ay0, by0))
inter = ix * iy
if inter <= 0:
return 0.0
return inter / (((ax1 - ax0) * (ay1 - ay0)) + ((bx1 - bx0) * (by1 - by0)) - inter)
def norm_rank(r):
return {"T": "10", "A": "A", "K": "K", "Q": "Q", "J": "J"}.get(r, r)
def card_matches(text, card):
"""Tolerant: rank (3..10,J..A) and suit symbol both present, any order."""
rank, suit = card[:-1], card[-1]
t = text.replace(" ", "").upper()
r_ok = rank.upper() in t if rank != "10" else ("10" in t or "T" in t.upper().replace("10", ""))
s_ok = suit in text or suit in t
return r_ok and s_ok
def main():
ap = argparse.ArgumentParser()
ap.add_argument("--images", default="dataset/images")
ap.add_argument("--labels", default="dataset/labels")
ap.add_argument("--limit", type=int, default=0, help="0 = all")
ap.add_argument("--out", default="results_mirage.json")
ap.add_argument("--scale", type=float, default=1.0,
help="upscale factor for the image before inference; "
"ground-truth bboxes are scaled to match for IoU")
ap.add_argument("--sections", default="objects,text")
args = ap.parse_args()
from cactus import Mirage
model = Mirage()
print("mirage loaded", flush=True)
sections = [s for s in args.sections.split(",") if s]
img_dir, lbl_dir = Path(args.images), Path(args.labels)
names = sorted(p.name for p in img_dir.glob("*.png"))
if args.limit:
names = names[: args.limit]
# ground truth card strings
per_image = []
card_hits = card_true = iou_hits = iou_true = pot_hits = pot_true = 0
reads = []
t_start = time.time()
for i, name in enumerate(names):
lab = json.loads((lbl_dir / name.replace(".png", ".json")).read_text())
from PIL import Image as PILImage
img = PILImage.open(img_dir / name).convert("RGB")
sf = args.scale
if sf != 1.0:
img = img.resize((int(img.width * sf), int(img.height * sf)),
PILImage.LANCZOS)
t0 = time.time()
try:
res = model.describe(img, opts={
"sections": sections, "conf": 0.4, "text_conf": 0.3,
"max_objects": 30, "max_text_lines": 30, "max_tokens": 700,
"nms": True})
except TypeError:
res = model.describe(img, {"sections": sections, "conf": 0.4,
"text_conf": 0.3, "max_objects": 30,
"max_text_lines": 30, "max_tokens": 700,
"nms": True})
dt = time.time() - t0
ocr_lines = [l.get("string", "") for l in (res.get("text") or [])]
obj_names = [o.get("name", "") for o in (res.get("objects") or [])]
obj_boxes = [o.get("bbox") for o in (res.get("objects") or []) if o.get("bbox")]
ocr_boxes = [l.get("bbox") for l in (res.get("text") or []) if l.get("bbox")]
# card read: each GT card matched by some OCR object or text line
gt_cards = [c["card"] for c in lab["card_bboxes"]]
img_hits = 0
img_ious = []
matched = set()
for gt in gt_cards:
hit = any(card_matches(t, gt) for t in ocr_lines) or \
any(card_matches(t, gt) for t in obj_names)
img_hits += hit
# bbox side: best IoU of any detection against any GT card box
best = 0.0
best_j = -1
gt_box = next(c["bbox"] for c in lab["card_bboxes"] if c["card"] == gt)
if sf != 1.0:
gt_box = [v * sf for v in gt_box]
for j, ob in enumerate(obj_boxes + ocr_boxes):
v = iou(gt_box, ob) if ob else 0.0
if v > best:
best, best_j = v, j
img_ious.append(best)
card_hits += img_hits
card_true += len(gt_cards)
iou_hits += sum(1 for v in img_ious if v > 0.4)
iou_true += len(gt_cards)
pot_true += 1
if any(str(lab["pot"]) in t for t in ocr_lines):
pot_hits += 1
per_image.append({"image": name, "cards": len(gt_cards), "hits": img_hits,
"iou": round(sum(img_ious) / len(img_ious), 3) if img_ious else 0,
"sec": round(dt, 1), "ocr": ocr_lines[:8]})
if i < 3:
print(f"[{name}] ocr={ocr_lines[:10]} objs={obj_names[:10]} "
f"({dt:.1f}s)", flush=True)
wall = time.time() - t_start
summary = {
"names": names[:5], "sections": sections, "scale": args.scale,
"card_read_acc": round(card_hits / max(card_true, 1), 3),
"card_bbox_recall_iou40": round(iou_hits / max(iou_true, 1), 3),
"pot_read_acc": round(pot_hits / max(pot_true, 1), 3),
"cards_total": card_true, "sec_per_image": round(wall / len(names), 1),
"wall_min": round(wall / 60, 1),
}
Path(args.out).write_text(json.dumps(
{"summary": summary, "per_image": per_image}, indent=1))
print(json.dumps(summary, indent=2), flush=True)
if __name__ == "__main__":
main()