i am new at matlab and i want Create color checkerboard

15 visualizaciones (últimos 30 días)
abory kikla
abory kikla el 6 de Mzo. de 2016
Editada: DGM el 22 de Nov. de 2022
Please help me solve this Lab-
Coursework1 :
1 Create checkerboard image using MATLAB
1 Use the matrix manipulation to implement a color chessboard image size 1024* 1024, where each stone size 32 * 32 without any loop statement.
2 Create checkerboard image using MATLAB
1 Use the matrix manipulation to implement a color chessboard image size 1024* 1024 ,where each stone size 32 * 32 based on loop statement.  Use checkerboard/kron function to implement a color chessboard image size 1024* 1024 ,where each stone size 32 * 32.?
[Merged from duplicate question]
I want to create a chess colored using the random function and displayed using the command Amco >> Can you do it
  2 comentarios
Walter Roberson
Walter Roberson el 6 de Mzo. de 2016
Editada: Walter Roberson el 6 de Mzo. de 2016
Yes of course I can do it. But it is your homework, and you need to work on it.
(Hint: I posted code that could easily be adapted for this, no more than 6 months ago.)
Jan
Jan el 6 de Mzo. de 2016
The link does work now. Please, abory kikla, show us what you have tried so far and ask a specific question. The forum will not solve your homework, because this would not be constructive.

Iniciar sesión para comentar.

Respuestas (1)

Image Analyst
Image Analyst el 6 de Mzo. de 2016
Try using the checkerboard function. Then threshold and call bwlabel() to assign every square a unique ID number. Then make up a colormap long enough so that you get a color for every square (this is where you could use rand()). Then apply the colormap with ind2rgb(), and finally show the RGB image with imshow(). That should be enough hints. Now, lets see your code that carries out those steps. You should get a checkerboard where the "black" squares are black and the "white" squares each have a unique color.
  31 comentarios
Image Analyst
Image Analyst el 29 de Dic. de 2020
Make it easy to help you, not hard. Supply us with a list of the RGB values of the various colors that you want. I don't want to type those in - I'd rather have you do that. After that, just use indexing to set the colors for each square - nothing magic or tricky about it.
DGM
DGM el 22 de Nov. de 2022
Editada: DGM el 22 de Nov. de 2022
Here is one way:
% parameters
CT = [0 0 0; 253 242 0; 238 15 140; 0 174 237; 255 255 255]/255; % the tile colors
squaresize = [20 20]; % the size of squares [y x]
nsquares = [11 11]; % the tiling [y x]
sizeout = round(squaresize.*nsquares);
outpict = toeplitz([1 2 3 1 4 1 5 1 2 3 1],[1 5 1 4 1 3 2 1 5 1 4]); % create 1px/tile index image
outpict = imresize(outpict,sizeout,'nearest'); % expand to final size
outpict = ind2rgb(outpict,CT); % apply colormap
imshow(outpict)
Considering that the pattern appears to be cyclic, I imagine it can be generalized a bit more.
% parameters
CT = [0 0 0; 253 242 0; 238 15 140; 0 174 237; 255 255 255]/255; % the tile colors
pat = [1 2 3 1 4 1 5]; % the base tile sequence
squaresize = [20 20]; % the size of squares [y x]
nsquares = [21 21]; % the tiling [y x]
sizeout = round(squaresize.*nsquares);
c = repmat(pat,[1 ceil(nsquares(1)/numel(pat))]);
r = circshift(fliplr(repmat(pat,[1 ceil(nsquares(2)/numel(pat))])),1);
outpict = toeplitz(c(1:nsquares(1)),r(1:nsquares(1))); % create 1px/tile index image
outpict = imresize(outpict,sizeout,'nearest'); % expand to final size
outpict = ind2rgb(outpict,CT); % apply augmented colormap
imshow(outpict)
See this thread for more "colored checkerboard" answers.

Iniciar sesión para comentar.

Categorías

Más información sobre Colormaps en Help Center y File Exchange.

Community Treasure Hunt

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

Start Hunting!

Translated by