what should you do to add additional coins in this image?

2 次查看（过去 30 天）
Moon Shadow
Moon Shadow 2014-1-28
评论： Walter Roberson 2014-1-30
Hey Guys, How you doing? Please after you generate A=imread('eight.tif'); from Matlab database, what should you do to add additional coins in this image? Please give me a complete code that works to add this additional coins in that image.
Thank you in advance,

请先登录，再回答此问题。

回答（2 个）

AJ von Alt
AJ von Alt 2014-1-28
What are the constraints on the problem? Do you want to detect coins, copy them, and insert them into the image or do you just want to display an image with more coins?
If that is the case, then
B = repmat( A , 20 , 20 );
imshow(B);
should do nicely.
Image Analyst
Image Analyst 2014-1-28
Manal, see my image segmentation tutorial: http://www.mathworks.com/matlabcentral/fileexchange/?term=authorid%3A31862. It find the coins. Then see my attached demo for how to copy and paste a chunk of an image. If you're willing to work a little and combine those, you can get it done. I know you can do it.
  9 个评论
显示 7更早的评论
Moon Shadow
Moon Shadow 2014-1-30
编辑：Walter Roberson 2014-1-30
This is my code:
grayImage = imread('eight.tif');
% Get the dimensions of the image.
% numberOfColorBands should be = 1.
[rows columns numberOfColorBands] = size(grayImage);
% Display the original gray scale image.
subplot(2, 2, 1);
imshow(grayImage);
axis on;title('Original Grayscale Image', 'FontSize', fontSize);
% Enlarge figure to full screen.
set(gcf, 'units','normalized','outerposition',[0 0 1 1]);
% Give a name to the title bar.
set(gcf,'name','Demo by ImageAnalyst','numbertitle','off')
% Let's compute and display the histogram, just for fun.
[pixelCount grayLevels] = imhist(grayImage);
subplot(2, 2, 2);
bar(pixelCount);
grid on;
title('Histogram of original image', 'FontSize', fontSize);
xlim([0 grayLevels(end)]); % Scale x axis manually.
% Ask user to draw a box.
subplot(2, 2, 1);
promptMessage = sprintf('Drag out a box that you want to copy,\nor click Cancel to quit.');
titleBarCaption = 'Continue?';
button = questdlg(promptMessage, titleBarCaption, 'Continue', 'Cancel', 'Continue');
if strcmpi(button, 'Cancel')
return;
Undefined function or variable 'fontSize'.
EDU>> k = waitforbuttonpress;
point1 = get(gca,'CurrentPoint'); % button down detected
finalRect = rbbox; % return figure units
point2 = get(gca,'CurrentPoint'); % button up detected
point1 = point1(1,1:2); % extract x and y
point2 = point2(1,1:2);
p1 = min(point1,point2); % calculate locations
offset = abs(point1-point2); % and dimensions
% Find the coordinates of the box.
xCoords = [p1(1) p1(1)+offset(1) p1(1)+offset(1) p1(1) p1(1)];
yCoords = [p1(2) p1(2) p1(2)+offset(2) p1(2)+offset(2) p1(2)];
x1 = round(xCoords(1));
x2 = round(xCoords(2));
y1 = round(yCoords(5));
y2 = round(yCoords(3));
hold on
axis manual
plot(xCoords, yCoords, 'b-'); % redraw in dataspace units
% Display the cropped image.
croppedImage = grayImage(y1:y2,x1:x2);
subplot(2, 2, 3);
imshow(croppedImage);
axis on;
title('Region that you defined', 'FontSize', fontSize);
Undefined function or variable 'fontSize'.
EDU>> Paste it onto the original image
[rows2 columns2] = size(croppedImage)
promptMessage = sprintf('Click on the upper left point where you want to paste it,\nor click Cancel to quit.');
titleBarCaption = 'Continue?';
button = questdlg(promptMessage, titleBarCaption, 'Continue', 'Cancel', 'Continue');
if strcmpi(button, 'Cancel')
return;
Undefined function 'Paste' for input arguments of type
'char'.
EDU>> [x, y] = ginput(1)
% Determine the pasting boundaries.
r1 = int32(y);
c1 = int32(x);
r2 = r1 + rows2 - 1;
r2 = min([r2 rows]);
c2 = c1 + columns2 - 1;
c2 = min([c2, columns]);
plot([c1 c2 c2 c1 c1], [r1 r1 r2 r2 r1], 'r-');
% Paste as much of croppedImage as will fit into the original image.
grayImage(r1:r2, c1:c2) = croppedImage(1:(r2-r1+1), 1:(c2-c1+1));
subplot(2, 2, 4);
imshow(grayImage);
axis on;
title('Region that you defined pasted onto original', 'FontSize', fontSize);
x =
82.4542
y =
88.2481
Undefined function or variable 'rows2'.
Did you mean:
EDU>> r2 = r1 + rows - 1;
EDU>> [x, y] = ginput(1)
Walter Roberson
Walter Roberson 2014-1-30
You deleted the line
fontSize = 20;
that occurs early on in Image Analyst's code.
You deleted the '%' that occurs at the beginning of a comment line
% Paste it onto the original image
Because that % was missed, MATLAB skipped execution of everything between that line and the next command prompt.

请先登录，再进行评论。

类别

在 Help Center 和 File Exchange 中查找有关 Geographic Plots 的更多信息

标签

产品

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by