首先计算绿色和蓝色波段的直方图。 hist_obj=HistogramAccumulator;addToHistFcn=@(block_struct)addToHistogram(hist_obj,block_struct.data);input_adapter.SelectedBands=2;blockproc(input_adapter,[100100],addToHistFcn);green_hist=hist_obj.Histogram;hist_obj=HistogramAccumulator;addToHistFcn=@(block_stru...
I = imread('peppers.png'); fun = @(block_struct) block_struct.data(:,:,[2 1 3]); blockproc(I, [64 64], fun, 'Destination', 'grb_peppers.tif'); subplot(1, 2, 1), imshow(I); subplot(1, 2, 2), imshow('grb_peppers.tif'); peppers.png(图左),grb_peppers.tif(图右) 列...
% You can use an anonymous function to define the function handle. The% function is passed a structure as input, a "block struct", with several% fields containing the block data as well as other relevant information.% The function should return the processed block data.edgeFun=@(block_stru...
就是调用函数，后面的fun代表函数名
close all; clear all; clc;以MATLAB附带的图像pout.tif为例实现上述过程：I = im2double(imread('pout.tif'));fun = @(block_struct) mean2(block_struct.data);I1 = blockproc(I, [3, 3], fun);figure;subplot(121), imshow(I);subplot(122), imshow(I1);B=blockproc(A, [m,n],...
https://www.mathworks.com/help/simulink/ug/creating-block-libraries.html 1.首先创建一个空文件夹,最好放在matlab安装文件中toolbox文件夹下 2. 在matlab中打开该空文件夹 3. 创建如下必要的函数 代码如下: function blkStruct =slblocks%This function specifies that the library should appear%inthe Library ...
I=imread('cameraman.tif');I=im2double(I);T=dctmtx(8);%DCT变换矩阵 fun1=@(block_struct)T*block_struct.data*T';B=blockproc(I,[8,8],fun1);%分块DCT变换 mask=[1111000011100000110000001000000000000000000000000000000000000000];fun2=@(block_struct)mask.*block_struct.data;B2=blockproc(B,[88],fun...
函数的几种调用的形式：B = blkproc(A,[m n],fun, parameter1, parameter2, ...)B = blkproc(A,[m n],[mborder nborder],fun,...)B = blkproc(A,'indexed',...)具体应用实例：J= blkproc(structdis,[blocksizerow blocksizecol], [blockrowoverlap blockcoloverlap],@computefeatures)...
嵌入：读取原图片。读取水印图片。原图片要处理为灰图。水印图片要处理为2值图。生成伪随机乱数（记住是怎么生成的，提取时用到）。随机乱数做成2值图K与水印图生成密钥WK的2值图（方法有很多种）。原图片做3次DWT处理（Matlab里函数是dwt2）得到图片DA,DB,DC,DD。取出DB或DC，或者DB,DC都用上...
function blkStruct = slblocks %SLBLOCKS Defines a block library. % Library's name. The name appears in the Library Browser's % contents pane. http://www..com/doc/9e7227309.html, = ['My' sprintf('\n') 'Library']; % The function that will be called when the user double-clicks on...