just copying app.py

app-cpu-torch.py

@@ -0,0 +1,301 @@
+import gradio as gr
+import json
+import os
+from typing import Any, List, Dict
+import spaces
+
+from PIL import Image, ImageDraw
+import requests
+from transformers import AutoModelForImageTextToText, AutoProcessor
+from transformers.models.qwen2_vl.image_processing_qwen2_vl import smart_resize
+import torch
+import re
+import traceback
+
+# --- Configuration ---
+MODEL_ID = "Hcompany/Holo1-3B"
+
+# --- Helpers (robust across different transformers versions) ---
+
+def pick_device() -> str:
+    # Force CPU per request
+    return "cpu"
+
+def apply_chat_template_compat(processor, messages: List[Dict[str, Any]]) -> str:
+    """
+    Works whether apply_chat_template lives on the processor or tokenizer,
+    or not at all (falls back to naive text join of 'text' contents).
+    """
+    tok = getattr(processor, "tokenizer", None)
+    if hasattr(processor, "apply_chat_template"):
+        return processor.apply_chat_template(messages, tokenize=False, add_generation_prompt=True)
+    if tok is not None and hasattr(tok, "apply_chat_template"):
+        return tok.apply_chat_template(messages, tokenize=False, add_generation_prompt=True)
+    # Fallback: concatenate visible text segments
+    texts = []
+    for m in messages:
+        for c in m.get("content", []):
+            if isinstance(c, dict) and c.get("type") == "text":
+                texts.append(c.get("text", ""))
+    return "\n".join(texts)
+
+def batch_decode_compat(processor, token_id_batches, **kw):
+    tok = getattr(processor, "tokenizer", None)
+    if tok is not None and hasattr(tok, "batch_decode"):
+        return tok.batch_decode(token_id_batches, **kw)
+    if hasattr(processor, "batch_decode"):
+        return processor.batch_decode(token_id_batches, **kw)
+    raise AttributeError("No batch_decode available on processor or tokenizer.")
+
+def get_image_proc_params(processor) -> Dict[str, int]:
+    """
+    Safely access image processor params with defaults that work for Qwen2-VL family.
+    """
+    ip = getattr(processor, "image_processor", None)
+    return {
+        "patch_size": getattr(ip, "patch_size", 14),
+        "merge_size": getattr(ip, "merge_size", 1),
+        "min_pixels": getattr(ip, "min_pixels", 256 * 256),
+        "max_pixels": getattr(ip, "max_pixels", 1280 * 1280),
+    }
+
+def trim_generated(generated_ids, inputs):
+    """
+    Trim prompt tokens from generated tokens when input_ids exist.
+    """
+    in_ids = getattr(inputs, "input_ids", None)
+    if in_ids is None and isinstance(inputs, dict):
+        in_ids = inputs.get("input_ids", None)
+    if in_ids is None:
+        return [out_ids for out_ids in generated_ids]
+    return [out_ids[len(in_seq):] for in_seq, out_ids in zip(in_ids, generated_ids)]
+
+# --- Model and Processor Loading (Load once) ---
+print(f"Loading model and processor for {MODEL_ID} (CPU only)...")
+model = None
+processor = None
+model_loaded = False
+load_error_message = ""
+
+try:
+    # CPU-friendly dtype; bf16 on CPU is spotty, so prefer float32
+    model = AutoModelForImageTextToText.from_pretrained(
+        MODEL_ID,
+        torch_dtype=torch.float32,
+        trust_remote_code=True
+    ).to(pick_device())
+    processor = AutoProcessor.from_pretrained(MODEL_ID, trust_remote_code=True)
+    model_loaded = True
+    print("Model and processor loaded successfully.")
+except Exception as e:
+    load_error_message = (
+        f"Error loading model/processor: {e}\n"
+        "This might be due to network issues, an incorrect model ID, or incompatible library versions.\n"
+        "Check the full traceback in the Space logs."
+    )
+    print(load_error_message)
+    traceback.print_exc()
+
+# --- Prompt builder ---
+def get_localization_prompt(pil_image: Image.Image, instruction: str) -> List[dict]:
+    guidelines: str = (
+        "Localize an element on the GUI image according to my instructions and "
+        "output a click position as Click(x, y) with x num pixels from the left edge "
+        "and y num pixels from the top edge."
+    )
+    return [
+        {
+            "role": "user",
+            "content": [
+                {"type": "image", "image": pil_image},
+                {"type": "text", "text": f"{guidelines}\n{instruction}"}
+            ],
+        }
+    ]
+
+# --- Inference (CPU) ---
+def run_inference_localization(
+    messages_for_template: List[dict[str, Any]],
+    pil_image_for_processing: Image.Image
+) -> str:
+    """
+    CPU inference; robust to processor/tokenizer differences and logs full traceback on failure.
+    """
+    try:
+        model.to(pick_device())
+
+        # 1) Build prompt text via robust helper
+        text_prompt = apply_chat_template_compat(processor, messages_for_template)
+
+        # 2) Prepare inputs (text + image)
+        inputs = processor(
+            text=[text_prompt],
+            images=[pil_image_for_processing],
+            padding=True,
+            return_tensors="pt",
+        )
+
+        # Move tensor inputs to the same device as model (CPU)
+        if isinstance(inputs, dict):
+            for k, v in list(inputs.items()):
+                if hasattr(v, "to"):
+                    inputs[k] = v.to(model.device)
+
+        # 3) Generate (deterministic)
+        generated_ids = model.generate(
+            **inputs,
+            max_new_tokens=128,
+            do_sample=False,
+        )
+
+        # 4) Trim prompt tokens if possible
+        generated_ids_trimmed = trim_generated(generated_ids, inputs)
+
+        # 5) Decode via robust helper
+        decoded_output = batch_decode_compat(
+            processor,
+            generated_ids_trimmed,
+            skip_special_tokens=True,
+            clean_up_tokenization_spaces=False
+        )
+
+        return decoded_output[0] if decoded_output else ""
+    except Exception as e:
+        print(f"Error during model inference: {e}")
+        traceback.print_exc()
+        raise
+
+# --- Gradio processing function ---
+def predict_click_location(input_pil_image: Image.Image, instruction: str):
+    if not model_loaded or not processor or not model:
+        return f"Model not loaded. Error: {load_error_message}", None
+    if not input_pil_image:
+        return "No image provided. Please upload an image.", None
+    if not instruction or instruction.strip() == "":
+        return "No instruction provided. Please type an instruction.", input_pil_image.copy().convert("RGB")
+
+    # 1) Resize according to image processor params (safe defaults if missing)
+    try:
+        ip = get_image_proc_params(processor)
+        resized_height, resized_width = smart_resize(
+            input_pil_image.height,
+            input_pil_image.width,
+            factor=ip["patch_size"] * ip["merge_size"],
+            min_pixels=ip["min_pixels"],
+            max_pixels=ip["max_pixels"],
+        )
+        resized_image = input_pil_image.resize(
+            size=(resized_width, resized_height),
+            resample=Image.Resampling.LANCZOS
+        )
+    except Exception as e:
+        print(f"Error resizing image: {e}")
+        traceback.print_exc()
+        return f"Error resizing image: {e}", input_pil_image.copy().convert("RGB")
+
+    # 2) Build messages with image + instruction
+    messages = get_localization_prompt(resized_image, instruction)
+
+    # 3) Run inference
+    try:
+        coordinates_str = run_inference_localization(messages, resized_image)
+    except Exception as e:
+        return f"Error during model inference: {e}", resized_image.copy().convert("RGB")
+
+    # 4) Parse coordinates and draw marker
+    output_image_with_click = resized_image.copy().convert("RGB")
+    match = re.search(r"Click\((\d+),\s*(\d+)\)", coordinates_str)
+    if match:
+        try:
+            x = int(match.group(1))
+            y = int(match.group(2))
+            draw = ImageDraw.Draw(output_image_with_click)
+            radius = max(5, min(resized_width // 100, resized_height // 100, 15))
+            bbox = (x - radius, y - radius, x + radius, y + radius)
+            draw.ellipse(bbox, outline="red", width=max(2, radius // 4))
+            print(f"Predicted and drawn click at: ({x}, {y}) on resized image ({resized_width}x{resized_height})")
+        except Exception as e:
+            print(f"Error drawing on image: {e}")
+            traceback.print_exc()
+    else:
+        print(f"Could not parse 'Click(x, y)' from model output: {coordinates_str}")
+
+    return coordinates_str, output_image_with_click
+
+# --- Load Example Data ---
+example_image = None
+example_instruction = "Select July 14th as the check-out date"
+try:
+    example_image_url = "https://huggingface.co/Hcompany/Holo1-7B/resolve/main/calendar_example.jpg"
+    example_image = Image.open(requests.get(example_image_url, stream=True).raw)
+except Exception as e:
+    print(f"Could not load example image from URL: {e}")
+    traceback.print_exc()
+    try:
+        example_image = Image.new("RGB", (200, 150), color="lightgray")
+        draw = ImageDraw.Draw(example_image)
+        draw.text((10, 10), "Example image\nfailed to load", fill="black")
+    except Exception:
+        pass
+
+# --- Gradio UI ---
+title = "Holo1-7B: Action VLM Localization Demo (CPU)"
+article = f"""
+<p style='text-align: center'>
+Model: <a href='https://huggingface.co/{MODEL_ID}' target='_blank'>{MODEL_ID}</a> by HCompany |
+Paper: <a href='https://cdn.prod.website-files.com/67e2dbd9acff0c50d4c8a80c/683ec8095b353e8b38317f80_h_tech_report_v1.pdf' target='_blank'>HCompany Tech Report</a> |
+Blog: <a href='https://www.hcompany.ai/surfer-h' target='_blank'>Surfer-H Blog Post</a>
+</p>
+"""
+
+if not model_loaded:
+    with gr.Blocks() as demo:
+        gr.Markdown(f"# <center>⚠️ Error: Model Failed to Load ⚠️</center>")
+        gr.Markdown(f"<center>{load_error_message}</center>")
+        gr.Markdown("<center>See Space logs for the full traceback.</center>")
+else:
+    with gr.Blocks(theme=gr.themes.Soft()) as demo:
+        gr.Markdown(f"<h1 style='text-align: center;'>{title}</h1>")
+
+        with gr.Row():
+            with gr.Column(scale=1):
+                input_image_component = gr.Image(type="pil", label="Input UI Image", height=400)
+                instruction_component = gr.Textbox(
+                    label="Instruction",
+                    placeholder="e.g., Click the 'Login' button",
+                    info="Type the action you want the model to localize on the image."
+                )
+                submit_button = gr.Button("Localize Click", variant="primary")
+
+            with gr.Column(scale=1):
+                output_coords_component = gr.Textbox(
+                    label="Predicted Coordinates (Format: Click(x, y))",
+                    interactive=False
+                )
+                output_image_component = gr.Image(
+                    type="pil",
+                    label="Image with Predicted Click Point",
+                    height=400,
+                    interactive=False
+                )
+
+        if example_image:
+            gr.Examples(
+                examples=[[example_image, example_instruction]],
+                inputs=[input_image_component, instruction_component],
+                outputs=[output_coords_component, output_image_component],
+                fn=predict_click_location,
+                cache_examples="lazy",
+            )
+
+        gr.Markdown(article)
+
+        submit_button.click(
+            fn=predict_click_location,
+            inputs=[input_image_component, instruction_component],
+            outputs=[output_coords_component, output_image_component]
+        )
+
+if __name__ == "__main__":
+    # CPU Spaces can be slow; keep debug True for logs
+    demo.launch(debug=True)