trainmodel | Cell 23 | Cell 25 | Search

This code snippet loads an image, applies preprocessing and prediction using a machine learning model, and then extracts and prints the predicted label. The code utilizes various functions, including ef for image transformation and a model's predict method for making predictions.

Cell 24

image = 'images/train/sad/42.jpg'
print("original image is of sad")
img = ef(image)
pred = model.predict(img)
pred_label = label[pred.argmax()]
print("model prediction is ",pred_label)

What the code could have been:

import os
import cv2
import numpy as np
from tensorflow import keras

def load_image(image_path):
    """
    Load an image from the given path.

    Args:
    image_path (str): Path to the image file.

    Returns:
    np.ndarray: Loaded image.
    """
    img = cv2.imread(image_path)
    img = cv2.cvtColor(img, cv2.COLOR_BGR2RGB)  # Convert to RGB
    return img

def preprocess_image(image):
    """
    Pre-process the image by resizing it.

    Args:
    image (np.ndarray): Input image.

    Returns:
    np.ndarray: Pre-processed image.
    """
    image = cv2.resize(image, (224, 224))  # Resize to 224x224
    image = image / 255.0  # Normalize pixel values
    return image

## Main Function

def classify_image(image_path, model, label):
    """
    Classify an image using the given model.

    Args:
    image_path (str): Path to the image file.
    model: Image classification model.
    label (list): List of labels.

    Returns:
    str: Predicted label.
    """
    image = load_image(image_path)
    image = preprocess_image(image)
    image = np.expand_dims(image, axis=0)  # Add batch dimension
    pred = model.predict(image)
    pred_label = label[pred.argmax()]
    return pred_label

# Example usage
image_path = 'images/train/sad/42.jpg'
model = keras.models.load_model('path_to_your_model.h5')  # Load the model
label = ['happy','sad', 'angry']  # List of labels

pred_label = classify_image(image_path, model, label)
print("original image is of", pred_label)

Code Breakdown

Importing Modules

No imports are shown in the code snippet.

Loading Image

image = 'images/train/sad/42.jpg'

Loads an image located at the specified path into a variable named image.

Printing Image Label

print("original image is of sad")

Prints a message to the console indicating the expected label of the original image.

Preprocessing Image

img = ef(image)

Applies some form of image transformation or feature extraction to the loaded image using a function named ef. The result is stored in the img variable.

Making Predictions

pred = model.predict(img)

Uses a machine learning model to make predictions on the preprocessed image. The result is stored in the pred variable.

Extracting Prediction Label

pred_label = label[pred.argmax()]

Extracts the label corresponding to the index of the maximum prediction value from a list of labels label. The result is stored in the pred_label variable.

Printing Prediction Label

print("model prediction is ", pred_label)

Prints the predicted label to the console.