'''
Author       : Alafun
GitHub Page  : https://github.com/Alafun/
Date         : 2022-06-21 16:43:21
LastEditors  : Alafun
LastEditTime : 2022-06-21 16:45:11
Description  : 
FilePath     : \\app.py
Copyright (c) 2022 by Alafun, All Rights Reserved. 
'''
import numpy as np

import gradio as gr

def sepia(input_img):
    sepia_filter = np.array(
        [[0.393, 0.769, 0.189], [0.349, 0.686, 0.168], [0.272, 0.534, 0.131]]
    )
    sepia_img = input_img.dot(sepia_filter.T)
    sepia_img /= sepia_img.max()
    return sepia_img

demo = gr.Interface(sepia, gr.Image(shape=(200, 200)), "image")

demo.launch()