app.py

import gradio as gr
import torch
from PIL import Image
from torchvision import transforms
# from diffusers import StableDiffusionPipeline, StableDiffusionImageVariationPipeline, DiffusionPipeline
import numpy as np
import pandas as pd
import math
from transformers import CLIPTextModel, CLIPTokenizer
import os

from clip_retrieval.clip_client import ClipClient, Modality


# clip_model_id = "openai/clip-vit-large-patch14-336"
# clip_retrieval_indice_name, clip_model_id ="laion5B-L-14", "/laion/CLIP-ViT-L-14-laion2B-s32B-b82K"
clip_retrieval_service_url = "https://knn.laion.ai/knn-service"
# available models = ['RN50', 'RN101', 'RN50x4', 'RN50x16', 'RN50x64', 'ViT-B/32', 'ViT-B/16', 'ViT-L/14', 'ViT-L/14@336px']
# clip_model="ViT-B/32"
clip_model="ViT-L/14"
clip_model_id ="laion5B-L-14"



max_tabs = 10
input_images = [None for i in range(max_tabs)]
input_prompts = [None for i in range(max_tabs)]
embedding_plots = [None for i in range(max_tabs)]
embedding_powers = [1. for i in range(max_tabs)]
# global embedding_base64s
embedding_base64s = [None for i in range(max_tabs)]
# embedding_base64s = gr.State(value=[None for i in range(max_tabs)])


def image_to_embedding(input_im):
    input_im = Image.fromarray(input_im)
    prepro = preprocess(input_im).unsqueeze(0).to(device)
    with torch.no_grad():
        image_embeddings = model.encode_image(prepro)
    image_embeddings /= image_embeddings.norm(dim=-1, keepdim=True)
    image_embeddings_np = image_embeddings.cpu().to(torch.float32).detach().numpy()
    return image_embeddings_np

def prompt_to_embedding(prompt):
    text = tokenizer([prompt]).to(device)
    with torch.no_grad():
        prompt_embededdings = model.encode_text(text)
    prompt_embededdings /= prompt_embededdings.norm(dim=-1, keepdim=True)
    prompt_embededdings_np = prompt_embededdings.cpu().to(torch.float32).detach().numpy()    
    return prompt_embededdings_np

def embedding_to_image(embeddings):
    size = math.ceil(math.sqrt(embeddings.shape[0]))
    image_embeddings_square = np.pad(embeddings, (0, size**2 - embeddings.shape[0]), 'constant')
    image_embeddings_square.resize(size,size)
    embedding_image = Image.fromarray(image_embeddings_square, mode="L")
    return embedding_image

def embedding_to_base64(embeddings):
    import base64
    # ensure float32
    embeddings = embeddings.astype(np.float32)
    embeddings_b64 = base64.urlsafe_b64encode(embeddings).decode()
    return embeddings_b64

def base64_to_embedding(embeddings_b64):
    import base64
    embeddings = base64.urlsafe_b64decode(embeddings_b64)
    embeddings = np.frombuffer(embeddings, dtype=np.float32)
    # embeddings = torch.tensor(embeddings)
    return embeddings

def main(
    # input_im,
    embeddings,
    scale=3.0,
    n_samples=4,
    steps=25,
    seed=None
    ):

    embeddings = base64_to_embedding(embeddings)
    # convert to python array
    embeddings = embeddings.tolist()
    results = clip_retrieval_client.query(embedding_input=embeddings)
    images = []
    for result in results:
        if len(images) >= n_samples:
            break
        # dowload image
        import requests
        from io import BytesIO
        try:
            response = requests.get(result["url"])
            if not response.ok:
                continue
            bytes = BytesIO(response.content)
            image = Image.open(bytes)
            image.title = str(result["similarity"]) + ' ' + result["caption"]
            images.append(image)
        except Exception as e:
            print(e)
    return images

def on_image_load_update_embeddings(image_data):
    # image to embeddings
    if image_data is None:
        # embeddings = prompt_to_embedding('')
        # embeddings_b64 = embedding_to_base64(embeddings)
        # return gr.Text.update(embeddings_b64)
        return gr.Text.update('')
    embeddings = image_to_embedding(image_data)
    embeddings_b64 = embedding_to_base64(embeddings)
    return gr.Text.update(embeddings_b64)

def on_prompt_change_update_embeddings(prompt):
    # prompt to embeddings
    if prompt is None or prompt == "":
        embeddings = prompt_to_embedding('')
        embeddings_b64 = embedding_to_base64(embeddings)
        return gr.Text.update(embedding_to_base64(embeddings))
    embeddings = prompt_to_embedding(prompt)
    embeddings_b64 = embedding_to_base64(embeddings)
    return gr.Text.update(embeddings_b64)

def update_average_embeddings(embedding_base64s_state, embedding_powers):
    final_embedding = None
    num_embeddings = 0
    for i, embedding_base64 in enumerate(embedding_base64s_state):
        if embedding_base64 is None or embedding_base64 == "":
            continue
        embedding = base64_to_embedding(embedding_base64)
        embedding = embedding * embedding_powers[i]
        if final_embedding is None:
            final_embedding = embedding
        else:
            final_embedding = final_embedding + embedding
        num_embeddings += 1
    if final_embedding is None:
        # embeddings = prompt_to_embedding('')
        # embeddings_b64 = embedding_to_base64(embeddings)
        # return gr.Text.update(embeddings_b64)
        return gr.Text.update('')

    # TODO toggle this to support average or sum
    # final_embedding = final_embedding / num_embeddings
    
    # normalize embeddings in numpy
    final_embedding /= np.linalg.norm(final_embedding)
    
    embeddings_b64 = embedding_to_base64(final_embedding)
    return embeddings_b64

def on_power_change_update_average_embeddings(embedding_base64s_state, embedding_power_state, power, idx):
    embedding_power_state[idx] = power
    embeddings_b64 = update_average_embeddings(embedding_base64s_state, embedding_power_state)
    return gr.Text.update(embeddings_b64)

def on_embeddings_changed_update_average_embeddings(embedding_base64s_state, embedding_power_state, embedding_base64, idx):
    embedding_base64s_state[idx] = embedding_base64 if embedding_base64 != '' else None
    embeddings_b64 = update_average_embeddings(embedding_base64s_state, embedding_power_state)
    return gr.Text.update(embeddings_b64)    

def on_embeddings_changed_update_plot(embeddings_b64):
    # plot new embeddings
    if embeddings_b64 is None or embeddings_b64 == "":
        data = pd.DataFrame({
            'embedding': [],
            'index': []})        
        return gr.LinePlot.update(data,
            x="index",
            y="embedding",
            # color="country",
            title="Embeddings",
            # stroke_dash="cluster",
            # x_lim=[1950, 2010],
            tooltip=['index', 'embedding'],
            # stroke_dash_legend_title="Country Cluster",
            # height=300,
            width=0)
        
    embeddings = base64_to_embedding(embeddings_b64)
    data = pd.DataFrame({
            'embedding': embeddings,
            'index': [n for n in range(len(embeddings))]})
    return gr.LinePlot.update(data,
            x="index",
            y="embedding",
            # color="country",
            title="Embeddings",
            # stroke_dash="cluster",
            # x_lim=[1950, 2010],
            tooltip=['index', 'embedding'],
            # stroke_dash_legend_title="Country Cluster",
            # height=300,
            width=embeddings.shape[0])

def on_example_image_click_set_image(input_image, image_url):
    input_image.value = image_url

# device = torch.device("mps" if torch.backends.mps.is_available() else "cuda:0" if torch.cuda.is_available() else "cpu")
device = "cuda:0" if torch.cuda.is_available() else "cpu"

from clip_retrieval.load_clip import load_clip, get_tokenizer 
# model, preprocess = load_clip(clip_model, use_jit=True, device=device)
model, preprocess = load_clip(clip_model, use_jit=True, device=device)
tokenizer = get_tokenizer(clip_model)

clip_retrieval_client = ClipClient(
    url=clip_retrieval_service_url, 
    indice_name=clip_model_id,
    use_safety_model = False,
    use_violence_detector = False,
    )
# results = clip_retrieval_client.query(text="an image of a cat")
# results[0]

examples = [
    ["SohoJoeEth.jpeg", "Ray-Liotta-Goodfellas.jpg", "SohoJoeEth + Ray.jpeg"],
    # ["SohoJoeEth.jpeg", "Donkey.jpg", "SohoJoeEth + Donkey.jpeg"],
    # ["SohoJoeEth.jpeg", "Snoop Dogg.jpg", "SohoJoeEth + Snoop Dogg.jpeg"],
]
tile_size = 100
# image_folder = os.path.join("file", "images")
image_folder ="images"

# image_examples = {
#         "452650": "452650.jpeg",
#         "Prompt 1": "a college dorm with a desk and bunk beds",
#         "371739": "371739.jpeg",
#         "Prompt 2": "a large banana is placed before a stuffed monkey.",
#         "557922": "557922.jpeg",
#         "Prompt 3": "a person sitting on a bench using a cell phone",

# }

tabbed_examples = {
    "CoCo": {
        "452650": "452650.jpeg",
        "Prompt 1": "a college dorm with a desk and bunk beds",
        "371739": "371739.jpeg",
        "Prompt 2": "a large banana is placed before a stuffed monkey.",
        "557922": "557922.jpeg",
        "Prompt 3": "a person sitting on a bench using a cell phone",
        "540554": "540554.jpeg",
        "Prompt 4": "two trains are coming down the tracks, a steam engine and a modern train.",
    },
    "Transforms": {
        "ColorWheel001": "ColorWheel001.jpg",
        "ColorWheel001 BW": "ColorWheel001 BW.jpg",
        "ColorWheel002": "ColorWheel002.jpg",
        "ColorWheel002 BW": "ColorWheel002 BW.jpg",
    },
    "Portraits": {
        "Snoop": "Snoop Dogg.jpg",
        "Snoop Prompt": "Snoop Dogg",
        "Ray": "Ray-Liotta-Goodfellas.jpg",
        "Ray Prompt": "Ray Liotta, Goodfellas",
        "Anya": "Anya Taylor-Joy 003.jpg",
        "Anya Prompt": "Anya Taylor-Joy, The Queen's Gambit",
        "Billie": "billie eilish 004.jpeg",
        "Billie Prompt": "Billie Eilish, blonde hair",
        "Lizzo": "Lizzo 001.jpeg",
        "Lizzo Prompt": "Lizzo,",
        "Donkey": "Donkey.jpg",
        "Donkey Prompt": "Donkey, from Shrek",
    },
    "NFT's": {
        "SohoJoe": "SohoJoeEth.jpeg",
        "SohoJoe Prompt": "SohoJoe.Eth",
        "Mirai": "Mirai.jpg",
        "Mirai Prompt": "Mirai from White Rabbit, @shibuyaxyz",
        "OnChainMonkey": "OnChainMonkey-2278.jpg",
        "OCM Prompt": "On Chain Monkey",
        "Wassie": "Wassie 4498.jpeg",
        "Wassie Prompt": "Wassie by Wassies",
    },
    "Pups": {
        "Pup1": "pup1.jpg",
        "Prompt": "Teacup Yorkies",
        "Pup2": "pup2.jpg",
        "Pup3": "pup3.jpg",
        "Pup4": "pup4.jpeg",
        "Pup5": "pup5.jpg",
    },
}


image_examples_tile_size = 50

with gr.Blocks() as demo:
    with gr.Row():
        with gr.Column(scale=5):
            gr.Markdown(
"""
# Soho-Clip Embedding Explorer

A tool for exploring CLIP embedding spaces.

Try uploading a few images and/or add some text prompts and click generate images.
""")
        with gr.Column(scale=2, min_width=(tile_size+20)*3):
            with gr.Row():
                with gr.Column(scale=1, min_width=tile_size):
                    gr.Markdown("## Input 1")
                with gr.Column(scale=1, min_width=tile_size):
                    gr.Markdown("## Input 2")
                with gr.Column(scale=1, min_width=tile_size):
                    gr.Markdown("## Generates:")
            for example in examples:
                with gr.Row():
                    for example in example:
                        with gr.Column(scale=1, min_width=tile_size):
                            local_path = os.path.join(image_folder, example)
                            gr.Image(
                                value = local_path, shape=(tile_size,tile_size), 
                                show_label=False, interactive=False) \
                                .style(height=tile_size, width=tile_size)

    with gr.Row():
        for i in range(max_tabs):
            with gr.Tab(f"Input {i+1}"):
                with gr.Row():
                    with gr.Column(scale=1, min_width=240):
                        input_images[i] = gr.Image(label="Image Prompt", show_label=True)
                    with gr.Column(scale=3, min_width=600):
                        embedding_plots[i] = gr.LinePlot(show_label=False).style(container=False)
                        # input_image.change(on_image_load, inputs= [input_image, plot])
                with gr.Row():
                    with gr.Column(scale=2, min_width=240):
                        input_prompts[i] = gr.Textbox(label="Text Prompt", show_label=True)
                    with gr.Column(scale=3, min_width=600):
                        with gr.Row():
                            # with gr.Slider(min=-5, max=5, value=1, label="Power", show_label=True):
                            #     embedding_powers[i] = gr.Slider.value
                            embedding_powers[i] = gr.Slider(minimum=-3, maximum=3, value=1, label="Power", show_label=True, interactive=True)
                        with gr.Row():
                            with gr.Accordion(f"Embeddings (base64)", open=False):
                                embedding_base64s[i] = gr.Textbox(show_label=False)
                for idx, (tab_title, examples) in enumerate(tabbed_examples.items()):
                    with gr.Tab(tab_title):
                        with gr.Row():
                            for idx, (title, example) in enumerate(examples.items()):
                                if example.endswith(".jpg") or example.endswith(".jpeg"):
                                    # add image example
                                    local_path = os.path.join(image_folder, example)
                                    with gr.Column(scale=1, min_width=image_examples_tile_size):
                                        gr.Examples(
                                            examples=[local_path],
                                            inputs=input_images[i],
                                            label=title,
                                        )
                                else:
                                    # add text example
                                    with gr.Column(scale=1, min_width=image_examples_tile_size*2):
                                        gr.Examples(
                                            examples=[example],
                                            inputs=input_prompts[i],
                                            label=title,
                                        )

    with gr.Row():
        average_embedding_plot = gr.LinePlot(show_label=True, label="Average Embeddings (base64)").style(container=False)
    with gr.Row():
        with gr.Accordion(f"Avergage embeddings in base 64", open=False):
            average_embedding_base64 = gr.Textbox(show_label=False)
    with gr.Row():
        submit = gr.Button("Search embedding space")
    with gr.Row():
        with gr.Column(scale=1, min_width=200):
            scale = gr.Slider(0, 25, value=3, step=1, label="Guidance scale")
        with gr.Column(scale=1, min_width=200):
            n_samples = gr.Slider(1, 16, value=4, step=1, label="Number images")
        with gr.Column(scale=1, min_width=200):
            steps = gr.Slider(5, 50, value=25, step=5, label="Steps")
        with gr.Column(scale=1, min_width=200):
            seed = gr.Number(None, label="Seed (blank = random)", precision=0)
    with gr.Row():
        output = gr.Gallery(label="Generated variations")

    embedding_base64s_state = gr.State(value=[None for i in range(max_tabs)])
    embedding_power_state = gr.State(value=[1. for i in range(max_tabs)])
    for i in range(max_tabs):
        input_images[i].change(on_image_load_update_embeddings, input_images[i], [embedding_base64s[i]])
        input_prompts[i].change(on_prompt_change_update_embeddings, input_prompts[i], [embedding_base64s[i]])
        embedding_base64s[i].change(on_embeddings_changed_update_plot, embedding_base64s[i], [embedding_plots[i]])
        idx_state = gr.State(value=i)
        embedding_base64s[i].change(on_embeddings_changed_update_average_embeddings, [embedding_base64s_state, embedding_power_state, embedding_base64s[i], idx_state], average_embedding_base64)
        embedding_powers[i].change(on_power_change_update_average_embeddings, [embedding_base64s_state, embedding_power_state, embedding_powers[i], idx_state], average_embedding_base64)

    average_embedding_base64.change(on_embeddings_changed_update_plot, average_embedding_base64, average_embedding_plot)

    # submit.click(main, inputs= [embedding_base64s[0], scale, n_samples, steps, seed], outputs=output)
    submit.click(main, inputs= [average_embedding_base64, scale, n_samples, steps, seed], outputs=output)
    output.style(grid=2)

    with gr.Row():
        gr.Markdown(
"""
My interest is to use CLIP for image/video understanding (see [CLIP_visual-spatial-reasoning](https://github.com/Sohojoe/CLIP_visual-spatial-reasoning).)


### Initial Features

- Combine up to 10 Images and/or text inputs to create an average embedding space.
- View embedding spaces as graph
- Generate a new image based on the average embedding space

### Known limitations

- Text input is a little off (requires fine tuning and I'm having issues with that at the moment)
- It can only generate a single image at a time
- Not easy to use the sample images

### Acknowledgements

- I heavily build on Justin Pinkney's [Experiments in Image Variation](https://www.justinpinkney.com/image-variation-experiments). Please credit them if you use this work.
- [CLIP](https://openai.com/blog/clip/)
- [Stable Diffusion](https://github.com/CompVis/stable-diffusion)

""")

# ![Alt Text](file/pup1.jpg)

# <img src="file/pup1.jpg" width="100" height="100">

# ![Alt Text](file/pup1.jpg){height=100 width=100}    

if __name__ == "__main__":
    demo.launch()