Update README_CN.md

README_CN.md

@@ -170,36 +170,35 @@ pip install -r requirements.txt
 ```
 
 ## 推理代码
-```bash
-export PYTHONPATH=/yourpath/QA-CLIP-main
-```
 推理代码示例：
 ```python
-import torch 
 from PIL import Image
+import requests
+from transformers import ChineseCLIPProcessor, ChineseCLIPModel
 
-import clip as clip
-from clip import load_from_name, available_models
-print("Available models:", available_models())  
-# Available models: ['ViT-B-16', 'ViT-L-14', 'RN50']
+model = ChineseCLIPModel.from_pretrained("TencentARC/QA-CLIP-ViT-B-16")
+processor = ChineseCLIPProcessor.from_pretrained("TencentARC/QA-CLIP-ViT-B-16")
 
-device = "cuda" if torch.cuda.is_available() else "cpu"
-model, preprocess = load_from_name("ViT-B-16", device=device, download_root='./')
-model.eval()
-image = preprocess(Image.open("examples/pokemon.jpeg")).unsqueeze(0).to(device)
-text = clip.tokenize(["杰尼龟", "妙蛙种子", "小火龙", "皮卡丘"]).to(device)
+url = "https://clip-cn-beijing.oss-cn-beijing.aliyuncs.com/pokemon.jpeg"
+image = Image.open(requests.get(url, stream=True).raw)
+# Squirtle, Bulbasaur, Charmander, Pikachu in English
+texts = ["杰尼龟", "妙蛙种子", "小火龙", "皮卡丘"]
 
-with torch.no_grad():
-    image_features = model.encode_image(image)
-    text_features = model.encode_text(text)
-    # 对特征进行归一化，请使用归一化后的图文特征用于下游任务
-    image_features /= image_features.norm(dim=-1, keepdim=True) 
-    text_features /= text_features.norm(dim=-1, keepdim=True)    
+# compute image feature
+inputs = processor(images=image, return_tensors="pt")
+image_features = model.get_image_features(**inputs)
+image_features = image_features / image_features.norm(p=2, dim=-1, keepdim=True)  # normalize
 
-    logits_per_image, logits_per_text = model.get_similarity(image, text)
-    probs = logits_per_image.softmax(dim=-1).cpu().numpy()
+# compute text features
+inputs = processor(text=texts, padding=True, return_tensors="pt")
+text_features = model.get_text_features(**inputs)
+text_features = text_features / text_features.norm(p=2, dim=-1, keepdim=True)  # normalize
 
-print("Label probs:", probs)
+# compute image-text similarity scores
+inputs = processor(text=texts, images=image, return_tensors="pt", padding=True)
+outputs = model(**inputs)
+logits_per_image = outputs.logits_per_image  # this is the image-text similarity score
+probs = logits_per_image.softmax(dim=1)
 ```
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