Quadtree decomposition (Encoding) and Decoding of RGB Image: fillrect_ulwh(ul,w,h,varargin) - File Exchange

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Highlights from
Quadtree decomposition (Encoding) and Decoding of RGB Image

A =padtomakepowof2(A,varargin... % if required then add padvalue (defualt 0)
I=qtreedecode(S,values) % Decode QuadTree Represenation of Image given as Sparse matrix 'S' and
I=qtreergbdecode(S,valRGB) % Decode QuadTree date that is decomposed (encode) by qt3ddecom method
S=trimsparse(S) % trim sparse matrix by removing extra rows/columns that have all elements zeros.
[S,keys]=delsparsekeybyxANDy(...
[S,valRGB]=qt3ddecom(I,vararg... % This method uses three thresholds for red,green and blue blocks.
[b1r,b1c,b2r,b2c,b3r,b3c,b4r,... % The method uses three thresholds for red,green and blue blocks.
[b1r,b1c,b2r,b2c,b3r,b3c,b4r,... % given the size of rectangle (matrix end points), it split into four
avg=avgofmatblks(mat,i,j,w,h) % finds average of different blocks of input matrix
drawquadblocks(S) % draw square quad blocks of quadtree in eight basic colors.
fillrect_ulwh(ul,w,h,varargin... % fill the rectangle region specified by upper left corner width
flag=ispowerof2(n)
rgbimgnew =padrgbtomakepowof2... % if required then add padvalue (defualt 0)
var=converttoclass(var,type)
main.m
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from Quadtree decomposition (Encoding) and Decoding of RGB Image by Dr. Murtaza Khan
Quadtree decomposition (Encoding) and Decoding of RGB Image of size M-by-N-by-3.

fillrect_ulwh(ul,w,h,varargin)

% % fill the rectangle region specified by upper left corner width
% % and height of recangle.

% % INPUT
% % ul=[x0,y0] i.e coordinates of upper left corner of rectangle
% % w: width of rectangle
% % h: height of rectangle
% % colorStr: color string one of eight predefined colors 
% %           'r' or 'y' or 'g' or 'c' or 'b' or 'm' or 'w' or 'b'
function fillrect_ulwh(ul,w,h,varargin)

% % % Default Values 
colorStr='g'; %default filling color green
defaultValues = {colorStr};
% % % Assign Values
nonemptyIdx = ~cellfun('isempty',varargin);
defaultValues(nonemptyIdx) = varargin(nonemptyIdx);
[colorStr] = deal(defaultValues{:});
% % %---------------------

% fill([ ul(1)+w, ul(1)+w, ul(1), ul(1) ],...
%      [ ul(2)+h, ul(2)+h, ul(2), ul(2) ],...
%        colorStr);

% figure, ,hold on
% axis ij
fill([ ul(1), ul(1),   ul(1)+w, ul(1)+w ],...
     [ ul(2), ul(2)+h, ul(2)+h, ul(2) ],...
       colorStr);
axis ij

% figure,
% axis normal

% % % --------------------------------
% % % Author: Dr. Murtaza Khan
% % % Email : drkhanmurtaza@gmail.com
% % % --------------------------------

Highlights from Quadtree decomposition (Encoding) and Decoding of RGB Image

Highlights from
Quadtree decomposition (Encoding) and Decoding of RGB Image