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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_img_heatmap(orig_img, activation_map):
 """Draw a heatmap on top of the original image using intensities from activation_map"""

    heatmap = cv2.applyColorMap(activation_map, cv2.COLORMAP_COOL)
    heatmap = cv2.cvtColor(heatmap, cv2.COLOR_BGR2RGB)
    img_heatmap = np.float32(heatmap) + np.float32(orig_img)
    img_heatmap = img_heatmap / np.max(img_heatmap)
    img_heatmap *= 255
    return img_heatmap.astype(int)