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I have drawn something in inkscape and it looks great. I resize the image to the size I want and then export it as a Bitmap. The result has very poor quality, looking like no anti-alias has been applied to it, all edges are jazzy.
All the images are vectors, and I resize them to fit Android screen resolutions. I had the impression that if I use inkscape I will be able to scale and export images and mantain great quality. I attach an image to see the jazzy lines.
How can I improve this export ?
I would actually export it as a SVG open it with Gimp, do additional stuff if required and then save it as a PNG using Gimps save for web function.
Have you tried this plugins?
It have worked pretty well for me:
http://code.google.com/p/pixelsnap/
The problem about the conversion of vector graphics to pixel based file is explained there.
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I have a black and white logo as a PNG. Now, I need to use it in Inkspace to add some text and make an svg out of it. I had a satisfying result but turns out the logo has a white background.
I had a look at the svg code and found out the image wasn't represented as a path but as an <image>.
What i need is to transform the png image into a svg path. And make sure that there is no background. What is the easiest way to do that?
I'm not familiar at all with image manipualtion programs. I have GIMP and Inkscape installed. But i've almost never used them, so detailed steps would be appreciated.
You can use the Inkscape path tracing feature to convert it to vectors. Select your image and then select Path -> Trace Bitmap. This should automatically trace the image leaving you with a set of one or more paths.
Depending on your image, you may get mixed results. In that case you can use the path editing tools to cleanup the trace. Or use those tools to recreate the image manually from scratch.
First go to this website https://www.remove.bg/upload
To remove the background after saving the image, go to Inkscape, fill bounded areas, choose the desired color and change the color of the image, then you will have an svg image
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Which image is looks beeter resolultion (png or svg)
I have used but it not looks good for smaller icons
Svg Image because you can scale them to any size and you don't loss of quality.
SVG files basically use for logo, icons, etc.
So, I recommend you to use SVG
Well it depends about the img type.
If You are dealing with an icon than go for SVG :)
https://developer.mozilla.org/en-US/docs/Web/Media/Formats/Image_types
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The general task is to binarize the image so that only the brightest spots remain. But adaptive binarization and the Otsu method do not give an acceptable result due to light traces (shown in the image).
I think that you need to go through the entire image with a small window that will highlight a local minimum in the area.I am counting on the fact that with the correct selection of the threshold, only light spots will remain that need to be found. It should be. But I do not know how to apply the standard opencv threshold function in sliding windows.
UPD:After the proposed adaptive threshold, the image looks like this. Not perfect, but much closer to what I need.It seems that a combination of threshold functions does not always give a better result than a single one.
This is the command:
outputimg = cv.adaptiveThreshold(img,255,cv.ADAPTIVE_THRESH_MEAN_C,cv.THRESH_BINARY,11,0)
further explanation and examples: https://docs.opencv.org/3.4/d7/d4d/tutorial_py_thresholding.html
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I noticed https://beta.icloud.com/ didn't use SVG which surprised me. Here Apple is on the cutting-edge using things like background: -webkit-canvas(animation) and they're not using SVG on what seems like a perfect place to use it. I want to delve deep into SVG but before I do I want to understand its limitations. When I see demos like this Mozilla demo it doesn't seem like it has major problems. What would be the reasons a large corporation, for example, would not use SVG?
There are relatively few "problems" with using SVG today. For the most part, it's a question of fit and familiarity - there are a lot of problems where the solution is to dynamically draw to a raster buffer. That is, canvas.
However, for Apple, the problem is that Safari has the worst of SVG compatibility of any major browser (at least, the last time I tested it). They want their sites to work in Safari.
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If I have a restricted gamut of colors in my image (to adhere to a CMYK gamut), does saving my file as a JPEG ensure that no new colors are introduced into the saved file? Since JPEG is lossy, and it sometimes looks like blended colors are used in the compression, I am concerned colors out of the gamut might be introduced. Or are the colors used in compression limited to the palette of the source being compressed?
No, this is not guaranteed. One of the aspects of "lossy" compression is that colours may be restored on decompression in a way that is different from the source. If you want precise colour reproduction, you will need to use a lossless format (eg. PNG).