下面的代碼沒有在matlab中運行。我想在matlab.Can匿名函數請你告訴我,什麼是錯在這條線:MATLAB代碼糾正
Inv_Y_Quant = blockproc(BB,[8 8], InvQuant);
和相關的代碼如下:
clear all
clc
I = imread('cameraman.tif');
% convert it to double
I = im2double(I);
% "Trim by 128"
I = I-128;
% Generate the DCT matrix
T = dctmtx(8);
% Generate Function handler for DCT
MyFun1 = @(block_struct) T * block_struct.data * T';
% BlockProcess the DCT the function for 8 by 8 blocks
B = blockproc(I,[8 8],MyFun1);
% Form the Quantization matrix
Q = [ 16 11 10 16 24 40 51 61
12 12 14 19 26 58 60 55
14 13 16 24 40 57 69 56
14 17 22 29 51 87 80 62
18 22 37 56 68 109 103 77
24 35 55 64 81 104 113 92
49 64 78 87 103 121 120 101
72 92 95 98 112 100 103 99];
% now generate function handler for the quantization
MyFun2 = @(block_struct)block_struct.data ./Q;
% perform the quantization
BB = blockproc(B,[8 8],MyFun2);
InvQuant = @(block_struct)round(block_struct.data.*Q);
Inv_Y_Quant = blockproc(BB,[8 8], InvQuant);
InvDct = @(block_struct)dct_matrix'*block_struct.data*dct_matrix;
Z = blockproc(Inv_Y_Quant, [8 8], InvDct);
Z = Z+128;
figure, imshow(Z)
Z = uint8(Z);
figure, imshow(Z)
%imwrite(Z, 'Mar7.tif');
%b = imread('Mar7.tif');
%imshow(b)
Matlab給你什麼錯誤?究竟是什麼問題? – Shai 2013-04-24 11:50:12
錯誤的原因是: 未定義的函數或變量'dct_matrix'。 錯誤==> @(block_struct)dct_matrix'* block_struct.data * dct_matrix 錯誤==> blockprocFunDispatcher在14 output_block =樂趣(block_struct); 錯誤==> blockprocInMemory在71 [ul_output fun_nargout] = blockprocFunDispatcher(樂趣,block_struct,... 錯誤==> blockproc在248 result_image = blockprocInMemory(一,BLOCK_SIZE,樂趣,border_size, ... 錯誤在==> matlab5在31 Z = blockproc(Inv_Y_Quant,[8 8],InvDct); – 2013-04-24 11:53:14