import ast import torch from PIL import Image, ImageDraw from qwen_vl_utils import process_vision_info from transformers import Qwen2VLForConditionalGeneration, AutoTokenizer, AutoProcessor def draw_point(image_input, point=None, radius=5): if isinstance(image_input, str): image = Image.open(BytesIO(requests.get(image_input).content)) if image_input.startswith('http') else Image.open(image_input) else: image = image_input if point: x, y = point[0] * image.width, point[1] * image.height ImageDraw.Draw(image).ellipse((x - radius, y - radius, x + radius, y + radius), fill='red') display(image) return model = Qwen2VLForConditionalGeneration.from_pretrained( "showlab/ShowUI-2B", torch_dtype=torch.bfloat16, device_map="auto" ) min_pixels = 256*28*28 max_pixels = 1344*28*28 processor = AutoProcessor.from_pretrained("Qwen/Qwen2-VL-2B-Instruct", min_pixels=min_pixels, max_pixels=max_pixels)

img_url = 'examples/web_dbd7514b-9ca3-40cd-b09a-990f7b955da1.png' query = "Nahant" _SYSTEM = "Based on the screenshot of the page, I give a text description and you give its corresponding location. The coordinate represents a clickable location [x, y] for an element, which is a relative coordinate on the screenshot, scaled from 0 to 1." messages = [ { "role": "user", "content": [ {"type": "text", "text": _SYSTEM}, {"type": "image", "image": img_url, "min_pixels": min_pixels, "max_pixels": max_pixels}, {"type": "text", "text": query} ], } ] text = processor.apply_chat_template( messages, tokenize=False, add_generation_prompt=True, ) image_inputs, video_inputs = process_vision_info(messages) inputs = processor( text=[text], images=image_inputs, videos=video_inputs, padding=True, return_tensors="pt", ) inputs = inputs.to("cuda") generated_ids = model.generate(**inputs, max_new_tokens=128) generated_ids_trimmed = [ out_ids[len(in_ids) :] for in_ids, out_ids in zip(inputs.input_ids, generated_ids) ] output_text = processor.batch_decode( generated_ids_trimmed, skip_special_tokens=True, clean_up_tokenization_spaces=False )[0] click_xy = ast.literal_eval(output_text) # [0.73, 0.21] draw_point(img_url, click_xy, 10)

_NAV_SYSTEM = """You are an assistant trained to navigate the {_APP} screen.  Given a task instruction, a screen observation, and an action history sequence,  output the next action and wait for the next observation.  Here is the action space: {_ACTION_SPACE} """ _NAV_FORMAT = """ Format the action as a dictionary with the following keys: {'action': 'ACTION_TYPE', 'value': 'element', 'position': [x,y]}  If value or position is not applicable, set it as `None`. Position might be [[x1,y1], [x2,y2]] if the action requires a start and end position. Position represents the relative coordinates on the screenshot and should be scaled to a range of 0-1. """ action_map = { 'web': """ 1. `CLICK`: Click on an element, value is not applicable and the position [x,y] is required.  2. `INPUT`: Type a string into an element, value is a string to type and the position [x,y] is required.  3. `SELECT`: Select a value for an element, value is not applicable and the position [x,y] is required.  4. `HOVER`: Hover on an element, value is not applicable and the position [x,y] is required. 5. `ANSWER`: Answer the question, value is the answer and the position is not applicable. 6. `ENTER`: Enter operation, value and position are not applicable. 7. `SCROLL`: Scroll the screen, value is the direction to scroll and the position is not applicable. 8. `SELECT_TEXT`: Select some text content, value is not applicable and position [[x1,y1], [x2,y2]] is the start and end position of the select operation. 9. `COPY`: Copy the text, value is the text to copy and the position is not applicable. """, 'phone': """ 1. `INPUT`: Type a string into an element, value is not applicable and the position [x,y] is required.  2. `SWIPE`: Swipe the screen, value is not applicable and the position [[x1,y1], [x2,y2]] is the start and end position of the swipe operation. 3. `TAP`: Tap on an element, value is not applicable and the position [x,y] is required. 4. `ANSWER`: Answer the question, value is the status (e.g., 'task complete') and the position is not applicable. 5. `ENTER`: Enter operation, value and position are not applicable. """ }

img_url = 'examples/chrome.png' split='web' system_prompt = _NAV_SYSTEM.format(_APP=split, _ACTION_SPACE=action_map[split]) query = "Search the weather for the New York city." messages = [ { "role": "user", "content": [ {"type": "text", "text": system_prompt}, {"type": "text", "text": f'Task: {query}'}, # {"type": "text", "text": PAST_ACTION}, {"type": "image", "image": img_url, "min_pixels": min_pixels, "max_pixels": max_pixels}, ], } ] text = processor.apply_chat_template( messages, tokenize=False, add_generation_prompt=True, ) image_inputs, video_inputs = process_vision_info(messages) inputs = processor( text=[text], images=image_inputs, videos=video_inputs, padding=True, return_tensors="pt", ) inputs = inputs.to("cuda") generated_ids = model.generate(**inputs, max_new_tokens=128) generated_ids_trimmed = [ out_ids[len(in_ids) :] for in_ids, out_ids in zip(inputs.input_ids, generated_ids) ] output_text = processor.batch_decode( generated_ids_trimmed, skip_special_tokens=True, clean_up_tokenization_spaces=False )[0] print(output_text) # {'action': 'CLICK', 'value': None, 'position': [0.49, 0.42]}, # {'action': 'INPUT', 'value': 'weather for New York city', 'position': [0.49, 0.42]}, # {'action': 'ENTER', 'value': None, 'position': None}