pages/Entorno de Ejecución.py

import streamlit as st
import tensorflow as tf
from tensorflow.keras.models import load_model
from transformers import AutoConfig, AutoModel, pipeline#, AutoProcessor, AutoModelForZeroShotImageClassification
from PIL import Image 
import os
import cv2
import numpy as np
import requests

st.set_page_config(
    page_title = 'Patacotrón',
    layout = 'wide',
    menu_items = {
        "About" : 'Proyecto ideado para la investigación de "Clasificación de imágenes de una sola clase con algortimos de Inteligencia Artificial".',
        "Report a Bug" : 'https://docs.google.com/forms/d/e/1FAIpQLScH0ZxAV8aSqs7TPYi86u0nkxvQG3iuHCStWNB-BoQnSW2V0g/viewform?usp=sf_link'
    }
)

st.sidebar.write("contact@patacotron.tech")

cnn, vit, zero_shot, autoencoder, svm, iforest, gan = st.tabs(["CNN", "ViT", "Zero-Shot", "Autoencoder", "OC-SVM", 'iForest', 'GAN'])

def predict(_model_list, _weights, _img): 
    y_gorrito = 0
    raw_img = cv2.cvtColor(_img, cv2.COLOR_BGR2RGB)
    img = cv2.resize(_img, (IMAGE_WIDTH, IMAGE_HEIGHT))
    for model, weight in zip(_model_list, _weights):
        y_gorrito += tf.cast(model(tf.expand_dims(img/255., 0)), dtype=tf.float32)*weight
    return [y_gorrito / sum(_weights), raw_img]

def preprocess(file_uploader, module = 'cv2'): #makes the uploaded image readable
    img = np.frombuffer(uploaded_file.read(), np.uint8)
    if module == 'cv2':
        img = cv2.imdecode(img, cv2.IMREAD_COLOR)
    elif module == 'pil':
        img = Image.open(file_uploader)
    return img

def multiclass_prediction(classifier, important_class): #made for hf zero-shot pipeline results
    score = (max([classifier[i]['score'] for i in range(len(classifier))]))
    labels = [predict['label'] for predict in classifier if score == predict['score']]
    for clase in classifier:
        if clase['label'] == important_class:
            class_score = clase['score']
    return (labels[0] if len(labels) == 1 else labels, score, class_score)

API_URL = "https://api-inference.huggingface.co/models"
headers = {"Authorization": f"Bearer {st.secrets['token']}"}

def query(data, model_name): #HF API
    response = requests.post(API_URL + "/" + model_name, headers=headers, data=data)
    while "error" in response.json(): 
        response = requests.post(API_URL + "/" + model_name, headers=headers, data=data)
    st.write("Done.")
    return response.json() #.json

@st.cache_resource
def load_clip():
    #processor = AutoProcessor.from_pretrained("openai/clip-vit-large-patch14-336")
    #model = AutoModelForZeroShotImageClassification.from_pretrained("openai/clip-vit-large-patch14-336")
    classifier = pipeline("zero-shot-image-classification", model = 'openai/clip-vit-large-patch14-336')
    return classifier

with cnn:

    col_a, col_b, = st.columns(2)
    ultra_flag = None
    with col_a:
        st.title("Redes neuronales convolucionales")
        st.caption("Los modelos no están en orden de eficacia, sino en orden de creación.")
        
        current_dir = os.getcwd()
        root_dir = os.path.dirname(current_dir)
        
        # Join the path to the models folder
        DIR = os.path.join(current_dir, "models")
        models = os.listdir(DIR)
        common_root = r"/home/user/app/models/ptctrn_v"
        common_end = ".h5"
        
        model_dict = dict()
        for model in models: #preprocessing of strings so the name is readable in the multiselect bar
            model_dir = os.path.join(DIR, model)
            model_name = 'Patacotrón ' + model_dir.split(common_root)[-1].split(common_end)[0]
            model_dict[model_name] = model_dir
        #ultraversions = ['Patacotrón 1.5', 'Patacotrón 1.7', 'Patacotrón 1.8', 'Patacotrón 1.12', 'Patacotrón 1.12.2', 'Patacotrón 1.12.3']
        #ultraversions = ['Patacotrón 1.5', 'Patacotrón 1.6', 'Patacotrón 1.12.2', 'Patacotrón 1.8', 'Patacotrón 1.12']#, 'Patacotrón 1.13.20', 'Patacotrón 1.13.38']
        #['Patacotrón 1.5', 'Patacotrón 1.6',  'Patacotrón 1.7', 'Patacotrón 1.12'] #
        #ultra_button = st.checkbox('Ultra-Patacotrón (en construcción, no es la mejor versión)')
        #ultra_flag = False
        weight_list = []
        
        #if ultra_button:
        #    ultra_flag = True
            #weight_list = [3, 1, 4.5, 1, .8, 1] [.5, 1.75, 4, .5, 2]
        #    weight_list = [2.5, 1.8, 1.5, 3.14, 2.2] #.2, 2]
            #[1, 2, 3, 2.5] 
        #    st.caption('Para Ultra-Patacotrón, este porcentaje no representa una a priori una probabilidad, sino la combinación ponderada de modelos con sesgos positivos y negativos, lo importante es que identifique correctamente el objeto.')
            
        # Create a dropdown menu to select the model
        model_choice = st.multiselect("Seleccione uno o varios modelos de clasificación", model_dict.keys())
        
        threshold = st.slider('¿Cuál va a ser el límite donde se considere patacón? (el valor recomendado es de 75%-80%)', 0, 100, 50, key = 'threshold_convnet')
        
        selected_models = []
                
        # Set the image dimensions
        IMAGE_WIDTH = IMAGE_HEIGHT = 224
    
        executed = False
        
    with col_b:
             
        uploaded_file = st.file_uploader(key = 'conv_upload', label = 'Sube la imagen a clasificar',type= ['jpg','png', 'jpeg', 'jfif', 'webp', 'heic'])
        
        if st.button(key = 'convnet_button', label ='¿Hay un patacón en la imagen?'):
            if len(model_choice) < 1:
            #if (len(model_choice) > 0 and ultra_flag) or (len(model_choice) == 0 and ultra_flag is None):
                st.write('Debe elegir como mínimo un modelo.')
            
            elif uploaded_file is not None:
                img = preprocess(uploaded_file)
                #if ultra_flag:
                #    with st.spinner('Cargando ultra-predicción...'):
                #        if not executed: 
                #            ultraptctrn = [load_model(model_dict[model]) for model in ultraversions]
                #            executed = True
                #        final_weights = weight_list if len(weight_list) >= 1 else [1 for i in range(len(ultraptctrn))]
                #        y_gorrito, raw_img = predict(ultraptctrn, final_weights, img)
                        
                #else:
                with st.spinner('Cargando predicción...'):
                    selected_models = [load_model(model_dict[model]) for model in model_choice if model not in selected_models]
                    final_weights = weight_list if len(weight_list) >= 1 else [1 for i in range(len(selected_models))]       
                    y_gorrito, raw_img = predict(selected_models, final_weights, img)

                if round(float(y_gorrito*100)) >= threshold:
                    st.success("¡Patacón Detectado!")
                
                else:
                    st.error("No se considera que haya un patacón en la imagen")
                
                st.caption(f'La probabilidad de que la imagen tenga un patacón es del: {round(float(y_gorrito * 100), 2)}%')  
                st.caption('Si los resultados no fueron los esperados, por favor, [haz click aquí](https://docs.google.com/forms/d/e/1FAIpQLScH0ZxAV8aSqs7TPYi86u0nkxvQG3iuHCStWNB-BoQnSW2V0g/viewform?usp=sf_link)')
                
                st.image(raw_img)
            
            else:
                st.write('Revisa haber seleccionado los modelos y la imagen correctamente.')

with vit:
      
    col_a, col_b = st.columns(2)

    with col_a:
        st.title('Visual Transformers')
        st.caption('One class is all you need!')

        model_dict = {
            'google/vit-base-patch16-224-in21k' : 'frncscp/patacoptimus-prime',
            'facebook/convnext-large-224' : 'frncscp/pataconxt'
        }
        
        model_choice = st.multiselect("Seleccione un modelo de clasificación", model_dict.keys(), key = 'ViT_multiselect')
        
        uploaded_file = st.file_uploader(key = 'ViT_upload', label = 'Sube la imagen a clasificar',type= ['jpg','png', 'jpeg', 'jfif', 'webp', 'heic'])
        flag = False
        threshold = st.slider('¿Cuál va a ser el límite desde donde se considere patacón? (se recomienda por encima del 80%)', 0, 100, 80, key = 'threshold_vit')

    with col_b:

        if st.button(key = 'ViT_button', label ='¿Hay un patacón en la imagen?'):
            if len(model_choice) < 1:
                print('Recuerda seleccionar al menos un modelo de clasificación')
            elif uploaded_file is not None:
                with st.spinner('Cargando predicción...'):

                    api_result = query(uploaded_file.read(), model_dict[model_choice[0]]) 

                    #classifiers = [pipeline("image-classification", model= model_dict[model_choice[i]]) for i in range(len(model_choice))]
                    
                    #classifier = pipeline("image-classification", model= model_dict[model_choice[0]])
                    #img = preprocess(uploaded_file, module = 'pil')


                    #def vit_ensemble(classifier_list, img):
                    #   y_gorrito = 0
                    #    for classifier in classifier_list:
                    #        classifier = classifier(img)                            
                    #        for clase in classifier:
                    #            if clase['label'] == 'Patacon-True':
                    #                y_gorrito += clase["score"]
                    #    return y_gorrito / len(classifier_list)


                    y_gorrito = 0
                    
                    for model in model_choice:
                        api_result = query(uploaded_file.read(), model_dict[model]) 
                        y_gorrito += api_result[1]["score"]                   
                    y_gorrito /= len(model_choice)

                    st.write("y gorrito calculado")
                    #classifier = classifier(img) 

                    #for clase in classifier:
                    #    if clase['label'] == 'Patacon-True':
                    #        y_gorrito = clase["score"]
                
                #y_gorrito = classifier[0]["score"]
                    
                    
                    #y_gorrito = vit_ensemble(classifiers, img)
                    
                    if round(float(y_gorrito*100)) >= threshold:
                        st.success("¡Patacón Detectado!")
                    else:
                        st.error("No se considera que haya un patacón en la imagen")
                    st.caption(f'La probabilidad de que la imagen tenga un patacón es del: {round(float(y_gorrito * 100), 2)}%')  
                    st.image(img) 
            else:
                st.write("Asegúrate de haber subido correctamente la imagen.")


                

with zero_shot:
    
    col_a, col_b = st.columns(2)
    zsloaded = []
        
    with col_a:
    
        st.title("Clasificación Zero-Shot")
        st.caption("Usando Clip de OpenAI")

        labels_for_classification =  ["A yellow deep fried smashed plantain", 
                            "Fried food", 
                            "Fruit",
                            "Anything"]
        
        uploaded_file = st.file_uploader(key = 'ZS_upload', label = 'Sube la imagen a clasificar',type= ['jpg','png', 'jpeg', 'jfif', 'webp', 'heic'])
        
    with col_b:
                
        if st.button(key = 'ZS_button', label ='¿Hay un patacón en la imagen?'):
            if uploaded_file is not None:     

                with st.spinner('Cargando el modelo (puede demorar hasta un minuto, pero después predice rápido)'):
                    classifier = load_clip()
                
                with st.spinner('Cargando predicción...'):
                    img = preprocess(uploaded_file, module = 'pil')
                    zs_classifier = classifier(img, 
                    candidate_labels = labels_for_classification)

                    label, _, y_gorrito = multiclass_prediction(zs_classifier, labels_for_classification[0])
                        
                    if label == "A yellow deep fried smashed plantain":
                        st.success("¡Patacón Detectado!")
                    else:
                        st.error("No se considera que haya un patacón en la imagen")
                        
                    st.caption(f'La probabilidad de que la imagen tenga un patacón es del: {round(float(y_gorrito * 100), 2)}%')  
                    st.image(img)
            else:
                st.write("Asegúrate de haber subido correctamente la imagen.")
        
with autoencoder:
    st.write('Próximamente')
with gan:
    st.write('Próximamente')  
with svm:
    st.write('Próximamente')
with iforest:
    st.write('Próximamente')