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| import streamlit as st | |
| import torch | |
| from PIL import Image | |
| from transformers import VisionEncoderDecoderModel, ViTFeatureExtractor, AutoTokenizer | |
| #pickle.load(open('energy_model.pkl', 'rb')) | |
| #vocab = np.load('w2i.p', allow_pickle=True) | |
| st.title("Image_Captioning_App") | |
| def load_models(): | |
| model = VisionEncoderDecoderModel.from_pretrained("nlpconnect/vit-gpt2-image-captioning") | |
| feature_extractor = ViTFeatureExtractor.from_pretrained("nlpconnect/vit-gpt2-image-captioning") | |
| tokenizer = AutoTokenizer.from_pretrained("nlpconnect/vit-gpt2-image-captioning") | |
| return model, feature_extractor, tokenizer | |
| #st.text("Build with Streamlit and OpenCV") | |
| if "photo" not in st.session_state: | |
| st.session_state["photo"]="not done" | |
| c2, c3 = st.columns([2,1]) | |
| def change_photo_state(): | |
| st.session_state["photo"]="done" | |
| def load_image(img): | |
| im = Image.open(img) | |
| return im | |
| uploaded_photo = c3.file_uploader("Upload Image",type=['jpg','png','jpeg'], on_change=change_photo_state) | |
| camera_photo = c2.camera_input("Take a photo", on_change=change_photo_state) | |
| #st.subheader("Detection") | |
| if st.checkbox("Generate_Caption"): | |
| model, feature_extractor, tokenizer = load_models() | |
| device = torch.device("cuda" if torch.cuda.is_available() else "cpu") | |
| model.to(device) | |
| max_length = 16 | |
| num_beams = 4 | |
| gen_kwargs = {"max_length": max_length, "num_beams": num_beams} | |
| def predict_step(our_image): | |
| if our_image.mode != "RGB": | |
| our_image = our_image.convert(mode="RGB") | |
| pixel_values = feature_extractor(images=our_image, return_tensors="pt").pixel_values | |
| pixel_values = pixel_values.to(device) | |
| output_ids = model.generate(pixel_values, **gen_kwargs) | |
| preds = tokenizer.batch_decode(output_ids, skip_special_tokens=True) | |
| preds = [pred.strip() for pred in preds] | |
| return preds | |
| if st.session_state["photo"]=="done": | |
| if uploaded_photo: | |
| our_image= load_image(uploaded_photo) | |
| elif camera_photo: | |
| our_image= load_image(camera_photo) | |
| elif uploaded_photo==None and camera_photo==None: | |
| pass | |
| #our_image= load_image('image.jpg') | |
| st.success(predict_step(our_image)) | |
| elif st.checkbox("About"): | |
| st.subheader("About Image Captioning App") | |
| st.markdown("Built with Streamlit by [Soumen Sarker](https://soumen-sarker-personal-website.streamlit.app/)") | |
| st.markdown("Demo applicaton of the following model [credit](https://huggingface.co/nlpconnect/vit-gpt2-image-captioning/)") |