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"""The main file for the reconstruction.
This file should NOT be modified except the body of the 'run_reconstruction' function.
Students can call their functions (declared in others files of src/methods/your_name).
"""
import numpy as np
from src.forward_model import CFA
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import pywt
#!!!!!!!! It is normal that the reconstructions lasts several minutes (3min on my computer)
def run_reconstruction(y: np.ndarray, cfa: str) -> np.ndarray:
"""Performs demosaicking on y.
Args:
y (np.ndarray): Mosaicked image to be reconstructed.
cfa (str): Name of the CFA. Can be bayer or quad_bayer.
Returns:
np.ndarray: Demosaicked image.
"""
# Define constants and operators
cfa_name = 'bayer' # bayer or quad_bayer
input_shape = (y.shape[0], y.shape[1], 3)
op = CFA(cfa_name, input_shape)
res = op.adjoint(y)
N,M = input_shape[0], input_shape[1]
#interpolating green channel
for i in range (N):
for j in range (M):
if res[i,j,1] ==0:
neighbors = get_neighbors(res,1,i,j,N,M)
weights = get_weights(res,i,j,1,N,M)
res[i,j,1] = interpolate_green(weights, neighbors)
#first intepolation of red channel
for i in range (1,N,2):
for j in range (0,M,2):
neighbors = get_neighbors(res,0,i,j,N,M)
neighbors_G = get_neighbors(res,1,i,j,N,M)
weights = get_weights(res,i,j,0,N,M)
res[i,j,0] = interpolate_red_blue(weights,neighbors, neighbors_G)
# second interpolation of red channel
for i in range (N):
for j in range (M):
if res[i,j,0] ==0:
neighbors = get_neighbors(res,0,i,j,N,M)
weights = get_weights(res,i,j,0,N,M)
res[i,j,0] = interpolate_green(weights, neighbors)
#first interpolation of blue channel
for i in range (0,N,2):
for j in range (1,M,2):
neighbors = get_neighbors(res,2,i,j,N,M)
neighbors_G = get_neighbors(res,1,i,j,N,M)
weights = get_weights(res,i,j,2,N,M)
res[i,j,2] = interpolate_red_blue(weights, neighbors, neighbors_G)
#second interpolation of blue channel
for i in range (N):
for j in range (M):
if res[i,j,2] ==0:
neighbors = get_neighbors(res,2,i,j,N,M)
weights = get_weights(res,i,j,2,N,M)
res[i,j,2] = interpolate_green(weights,neighbors)
# k=0
# while k<2 :
# for i in range(input_shape[0]):
# for j in range(input_shape[1]):
# res[i][j][1] = correction_green(res,i,j,N,M)
# for i in range(input_shape[0]):
# for j in range(input_shape[1]):
# res[i][j][0] = correction_red(res,i,j,N,M)
# for i in range(input_shape[0]):
# for j in range(input_shape[1]):
# res[i][j][2] = correction_blue(res,i,j,N,M)
# k+=1
res[res>1] = 1
res[res<0] = 0
return res