instead of adding the picture then changing the background color, do it the other way around. ( change the back color to black then put your picture) follow me:
1. right click on your picture
2. select ';Open With';
3. then select ';Internet Explorer';
4. when Internet Explorer opens, right click on your picture inside it and select ';Copy';
5. Open Paint
6. change the background color
7. from the menu on top, select ';Edit --%26gt; Paste';
and your done :) save your work.
And if you want to know the reason behind the ';dotty'; problem, it's because the Filling tool in Paint is actually trying to change the color of the painted area with the selected color. so if the background in already white and your photo has white color on the edges then the Fill tool will try to change it too. because it doesn't differentiate between your photo and the background.Question about paint (software)?
When you paste an image into Paint that is smaller than the current image (which is entirely white by default), you will get portions of the other image where the new image is not overlapping it. So for example imagine you have nine pixels represented by the number 9, like this:
999
999
999
Then imagine that you have an image with four pixels represented by the number 1, like this:
11
11
If you paste that into the original image, you would get something like this:
119
119
999
Notice how you still have pixels of the original (9) type where the new, smaller image has not overlapped them. Paint is doing exactly this, save that it is dealing with far more pixels. The problem with the bucket tool arises when the new image contains pixels around the edge which match the original background pixels. For example imagine if you start with this:
999
999
999
and you paste in this:
11
91
You would get:
119
919
999
Now if you used the bucket tool on any of the '9' pixels with, say, the color '3', all the '9' pixels would change to '3' pixels (because they are all touching in a chain), and you would get this:
113
313
333
where not only the '9' pixels around the edge but also the '9' pixel that was part of your pasted image have all been changed to '3' pixels. This is what is happening with your image: You're using the bucket tool on a white area around the edge, but it is 'flowing into' all the white pixels on the pasted image that are connected to the white edge through a chain of white pixels. The reason why you have white dots is because some of the pixels are not perfectly white, and paint only changes the ones that are precisely the same color as the color you clicked on with the bucket tool (in this case, white), all the ones that are close to white but not quite white are being left exactly as they are and contrast horribly with the black pixels around them. In order to prevent all this, you can use the bucket tool to change the whole image black BEFORE pasting in your photo, then paste in the photo (containing the white pixels) on top of that black background.
The other option is to get some superior image editing software. Paint, quite frankly, sucks. Without paying a cent, you can download the far superior GIMP here:
http://www.gimp.org/
GIMP, like most other advanced image editing software, will give you options to keep different parts of an image on different layers, as well as options for the bucket tool so that it WILL consider pixels not quite the same color as the one you started on, and will also anti-alias the edges of the bucket-painted area so that you don't get a jagged dividing line either. I highly recommend getting GIMP or some other advanced image editing software for any serious graphics work, including putting together photographs. These programs have many other options you can also use to do all sorts of neat things to photographs, such as changing a color photograph to black and white, making the photograph look like an 'embossed' metal carving, erasing unwanted sections of a photograph, blending one photo with another, etc.
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