saving coloured image in gui

2017 7 28
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更新时间：2017 7 29
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hiii all!!' i was trying to save an image in tif format after doing maximum intensity projection!!whenever m saving the image stored is in grey scale...my original image colour is green....can anyone give me a solution!!thanks in advance

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Geoff Hayes
Geoff Hayes 2017-7-28
ash - please show the code that you have written to save the image.
ash fairy
ash fairy 2017-7-29
save=newfile('*.tif','SAVE FILE');
imwrite(new,save,'WriteMode','append');

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Image Analyst
Image Analyst 2017-7-28
编辑：Image Analyst 2017-7-28

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Are you SURE? Have you passed the image you're passing to imwrite() into the size() function and seen what it says?
[rows, columns, numberOfColorChannels] = size(yourImage) % No semicolon
whos yourImage
What gets reported to the command line for numberOfColorChannels and the data type? If it's 1 instead of 3, then it's gray scale, NOT color. If it's 3, it should save as color, if it's uint8.

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Image Analyst
Image Analyst 2017-7-29
Regarding your code:
save=newfile('*.tif','SAVE FILE');
imwrite(new,save,'WriteMode','append');
Do not use save as the name of your variable. It is the name of an important build in function, which you just (temporarily) destroyed.
Also, please answer my original questions!
ash fairy
ash fairy 2017-7-29
hi, this is my original code axes(handles.axes1); myimage=getimage; saveeeee=uiputfile('*.tif','SAVe'); A=get(hObject,'Value') if A==1 z = zeros(256, 1); ramP = (0:255)' / 255; cmaP = [z, ramP, z];
myimage=ind2rgb(im2uint8(myimage),colormap(cmaP));
imwrite(myimage,saveeeee)
now the file gets saved as green color , but the thing is i want to save my file as 16bit green color(im2uint16 did not work right). currently when i save the file its rgb file. my goal is to get a 16bit color image so that i can read it into imagej
Image Analyst
Image Analyst 2017-7-29
Ash fairy, you need to make a full size colormap, then you need to do this:
rgbImage = ind2rgb(imageInAxes, colormap(cmap));
rgbImage16 = im2uint16(rgbImage);
See this full demo code:
% Initialization
gray8 = imread('cameraman.tif');
gray16 = im2uint16(gray8);
subplot(1, 3, 1);
hAxis = imshow(gray16);
whos gray16
% OK, let's start.
imageInAxes = getimage(hAxis);
whos imageInAxes % Should be uint16.
% Create green color map.
maxGL = double(intmax(class(gray16)))
z = zeros(maxGL + 1, 1);
ramp = (0 : maxGL)' / maxGL;
cmap = [z, ramp, z];
% Convert gray scale 16 bit image to color using colormap
rgbImage = ind2rgb(imageInAxes, colormap(cmap));
whos rgbImage
% Right now rgbImage is double in the range 0-1.
% Convert to uint16 in the range 0-65535
rgbImage16 = im2uint16(rgbImage);
subplot(1, 3, 2);
imshow(rgbImage16);
whos rgbImage
% Ask user to save the image.
[baseFileName, folder] = uiputfile('*.tif','Save the image?');
fullFileName = fullfile(folder, baseFileName)
imwrite(rgbImage16, fullFileName)
% Recall it from disk to check that it looks normal
recalledImage = imread(fullFileName);
subplot(1, 3, 3);
imshow(recalledImage);

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