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i am getting this error please help me ?

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Rishith Reddy
Rishith Reddy 2022-10-24
关闭： DGM 2022-10-24
i=imread("Lena512.png")
i_i=im2double(i);
k=ones(4,4)/16;
b=1
conv2d(i_i,k,b)
function conv2d(i,k,b)
[m,n]= size(k);
[y,x]=size(i);
y=y-m+1;
x=x-m+1;
ni=zeros(y,x)
for l=2:1:y
for j=2:1:x
ni(l,j)=sum(i(l:l+m-1,j:j+n-1)*k)+b
end
end
end
Unable to perform assignment because the size of the left side is 1-by-1 and the size of the right side is 1-by-4.
Error in untitled2>conv2d (line 15)
ni(l,j)=sum(i(l:l+m-1,j:j+n-1)*k)+b
the respective pyhon code is working
# -*- coding: utf-8 -*-
"""
Created on Mon Oct 24 21:29:27 2022
@author: rishi
"""
import numpy as np
import cv2
import os
os.chdir(r"C:\Users\rishi\Downloads")
image=cv2.imread("Lena512.png")
image = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)
k=np.ones([4,4],dtype='int')/16
def convolution2d(image, kernel,bias):
m, n = kernel.shape
if (m == n):
y, x = image.shape
y = y - m + 1
x = x - m + 1
new_image = np.zeros((y,x))
for i in range(y):
for j in range(x):
new_image[i][j] = np.sum(image[i:i+m, j:j+m]*kernel) + bias
return new_image
x=convolution2d(image,k,bias=1)
cv2.imwrite('blurrey.jpg',x)

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