How do I fuse a JPEG image and a PNG with transparency.

I have a JPG image :

And a PNG image :

I would like to add the png image over the jpg image at certain positions and orientations.

The output I'm aiming for is something like :

I tried the code below but the color is all off and I have no means of repositioning the png image in different orientations and positions. Please advise .

clear all;
img_background = imread('/Users/admin/Documents/Stamper/originals/220px-Benjamin_Franklin2_1895_Issue-1c.jpg');
[img_overlay,map,alpha] = imread('/Users/admin/Documents/Stamper/Imprints/Imprint 1.png');

f= imshowpair(img_background,img_overlay,'blend','Scaling','joint');

[Nikunj Kothari]

You can try using the

wfusimg

function to fuse the two images after reading them in MATLAB?

Answer 1

[DGM]

Here's something simple for dealing with the arbitrary overlap.

% inputs
[FG,~,FGa] = imread('cancellation.png');
BG = imread('stamp.jpeg');

% parameters
fgscale = 0.7;
fgos = [-95 75]; % [x y]

% make sure everything is a common class
FG = im2double(FG);
FGa = im2double(FGa);
BG = im2double(BG);

% resize the FG as needed
FG = imresize(FG,fgscale);
FGa = imresize(FGa,fgscale);

% get input, output coordinates
szf = size(FG,1:2);
szb = size(BG,1:2);
xrf = 1:szf(2); % input space
yrf = 1:szf(1);
xrb = intersect(xrf + fgos(1),1:szb(2)); % get intersection in output space
yrb = intersect(yrf + fgos(2),1:szb(1));
xrf = intersect(xrb - fgos(1),xrf); % transform back to input space
yrf = intersect(yrb - fgos(2),yrf);

% composition only needs to happen if the images overlap
outpict = BG;
if ~isempty(xrf) && ~isempty(yrf)
    % crop FG and compose output
    FG = FG(yrf,xrf,:);
    FGa = FGa(yrf,xrf,:);
    outpict(yrb,xrb,:) = FG.*FGa + BG(yrb,xrb,:).*(1-FGa);
end

% show the result
imshow(outpict)