How to save maximum level values in the array

4 次查看（过去 30 天）

Stephen john 2022-8-15

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1779370-how-to-save-maximum-level-values-in-the-array

评论： Stephen john 2022-8-15

incoming.mat

Hello every one, I hope you are doing well. I have the following code which take the data as input which has shape 1x77564 then we convert it into 1000 samples. So there are 80 images were created using the following Code.

Each 1000 samples is convert into image as shown in the following code. after converting into image , i have applied a function which finds the number of level, maximum,minimum value

I want to save the Values in image which have maximum number of levels, and PRFValue with respect to levels for example if maximum levels are 4 then number of PRFValue are 4 and find the maximum and minimum value from that.

buffered = buffer(incomingdata, 1000);
for K = 1 : size(buffered,2)
    thisdata = buffered(:,K);
    outputdataset=thisdata.';
    %work with thisdata
    [numImages, lenImage] = size( outputdataset);
imSz = 1000; % assuming images are 1000x1000
imbg = false(10000,1000);                                  % background "color"
imfg = ~imbg(1,1);                                  % forground "color"
imSizeOut=[10000 1000];                                % ImageSize
for k= 1:numImages        
    imData = round( outputdataset(k,:));  % get pattern
    
    [~,Y] = meshgrid(1:1000,1:10000); % make a grid
    
    % black and white image
    BW = imbg;
    BW(Y==imData)=imfg;
    valueestimation=imbinarize(imresize(uint8(BW),imSizeOut));
    % convert to uint8 (0 255)
    valueestimationimage = im2uint8(valueestimation);  
    % resize (from 1000x1000)
    SE=strel('disk',2);
    BW=imdilate(BW,SE);
    
    BW=imbinarize(imresize(uint8(BW),imSizeOut));
    % convert to uint8 (0 255)
    imoriginalestimate = im2uint8(BW);
    imoriginal = flipud(imoriginalestimate);
    [PRFValue,NumberofPulses,Levels,maximum,minimum]= DSLEVELFUNCTION1(imoriginalestimate )
 
end
end
%DS Function
function [PRFValue,NumberofPulses,Levels,maximum,minimum]= DSLEVELFUNCTION1(path)
rgbImage = path;
[rows, columns, numberOfColorChannels] = size(rgbImage);
if numberOfColorChannels > 1
	grayImage = rgbImage(:, :, 3);
else
	grayImage = rgbImage;
end
mask = grayImage >= 128;
SE= strel('disk',2);
BW = imclose(mask,SE);
BW=mask;
[labeledImage, numRegions] = bwlabel(BW);
props = regionprops(labeledImage,'all' );
allLengths = [props.Area];
% NumberofPulses=allLengths;
centroids = vertcat(props.Centroid);
whiteLineRows1 = centroids(:, 2);
maximum=max(whiteLineRows1);
 minimum=min(whiteLineRows1);
DSPRFValue= unique(whiteLineRows1);
Levels=length(DSPRFValue);
% figure;
% hold on;
for k = 1 : numRegions
    y1 = round(centroids(k, 2));
    y2 = y1;
	xt = props(k).Centroid(1);
	yt = props(k).Centroid(2);
    BB = props(k).BoundingBox;
    
% 	str = sprintf('DS Length %d at PRF %d', size(props(k).Image,2), y1);
% 
% 	text(xt, yt, str, 'Color', 'r',  'HorizontalAlignment', 'Center', 'VerticalAlignment','bottom', 'FontSize',8);
%     rectangle('Position', [BB(1),BB(2),BB(3),BB(4)],'EdgeColor','b','LineWidth',1) ;
    PRFValue(k)=y1;
    NumberofPulses(k)=size(props(k).Image,2);
%     caption = sprintf('Dwell and Swtich Image with %d Levels', Levels);
%     hold off
%     title(caption, 'FontSize',10);
end
end

12 个评论
显示 10更早的评论隐藏 10更早的评论

Walter Roberson 2022-8-15

在 MATLAB Online 中打开

buffer

buffered = buffer(incomingdata, 1000);

Is there any case in which buffer() can return a 3D array? Or does it always return a 2D array (or at least one column vector) ?

for K = 1 : size(buffered,2)
    thisdata = buffered(:,K);

You are using one single : index, and one scalar column index. Is there any case in which that could return a 2D array, or will it always return a column vector?

outputdataset=thisdata.';

With thisdata always being a column vector, is there any situation in which outputdataset would become a 2D array after transposing the column vector, or will the result always be a row vector?

[numImages, lenImage] = size( outputdataset);

with outputdataset being a row vector, is there any case in which numImages can be anything other than 1 at that point?

imSz = 1000; % assuming images are 1000x1000
imbg = false(10000,1000);                                  % background "color"
imfg = ~imbg(1,1);                                  % forground "color"
imSizeOut=[10000 1000];                                % ImageSize
for k= 1:numImages        

are those statements inside the for K loop, or did I miss an end statement? You set the indentation as if they are outside the for K loop, but I believe you will find that they are inside for K . Using for k inside for K is mildly confusing but is valid as far as MATLAB is concerned, since K and k are considered different variable names.

sometime i get more than 1 numImages

No you do not -- not unless you have changed the code since you posted it. numImages is going to be exactly 1, always. There is no point looping over it.

Walter Roberson 2022-8-15

在 MATLAB Online 中打开

Under what circumstances could outputdataset have more than one row at that point?

incomingdata = randn(1,17465);
buffered = buffer(incomingdata, 1000);
count_of_multiple_rows = 0;
for K = 1 : size(buffered,2)
    thisdata = buffered(:,K);
    outputdataset=thisdata.';
    %work with thisdata
    [numImages, lenImage] = size( outputdataset);
    if numImages ~= 1
        fprintf('Iteration #%d has %d rows\n', K, numImages);
        count_of_multiple_rows = count_of_multiple_rows + 1;
    end
end
if count_of_multiple_rows == 0
    fprintf('As expected, numImages was 1 <strong>every</strong> time\n');
else
    fprintf('Unexpectedly, numImages was different %d times\n', count_of_multiple_images);
end
As expected, numImages was 1 every time

Stephen john 2022-8-15

@Walter Roberson Okay let say its one every time, then Please solve this method. When the image are created then we pass through the function , use the following line, Each image is pass through this function it returns PRFValue,NumberofPulses,Levels,maximum,minimum.

I want to save the matrix which have Highest number of Levels and save the corresponding PRFValue,NumberofPulses,maximum,minimum

请先登录，再进行评论。

请先登录，再回答此问题。