Questions tagged [png-format]

Questions on the use of Mathematica to export and handle PNG graphics format.

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2
votes
1answer
133 views

Export Parametric Plot as PNG with no background

How do I export a ParametricPlot as a png image with no background? For example, my exported image look like this: But it has a white background. I need that white background to be a completely ...
4
votes
1answer
111 views

Memory consumption problem when reading png images with Image`ImportExportDump`ImageReadPNG

For importing png images I use often: image = First@Image`ImportExportDump`ImageReadPNG[fileName] (see: ?*`*PNG*) since this is faster than: ...
0
votes
1answer
29 views

Extract and name PNG's from loops [duplicate]

I want to extract PNG files and name them depending on the dummy variable of a loop. For example, starting from ...
8
votes
2answers
425 views

How to extract all images from avi when FrameRate is not Integer

Here is an avi movie (204*432 Pixels) which contains 22 different images with numbers from 1 to 22. I tested e.g. with VirtualDub and MATLAB that all extracted images are different. Movie: https://...
2
votes
0answers
41 views

Transform Textual Data from RunProcess to an Image

I'm working with xPDF, which has a simple pdf to png converter. The problem is that the output (tt) is not a PNG String, and i can't do: ...
3
votes
1answer
628 views

How to export an image with specified filesize

We can export an image and check its size with Mathematica: Export["test.png"(*or JPEG*), Plot[Sin[x], {x, 0, 6 Pi}]]; FileByteCount[%]/1024^2 // N ...
1
vote
1answer
315 views

How to export image to PNG format and setting compression degree

A PNG is a compressed and lossless image format. Here information about PNG compression can be found: http://optipng.sourceforge.net/pngtech/optipng.html See also this question: https://superuser....
8
votes
1answer
341 views

Extract images from large AVI movies (50-100 GB)

I will get large RGB AVI files (35 Hz, 1600$\times$1200 pixels) of up to 100 GB size. All three channels contain the same grayscale image. I want to extract each AVI file into one channel png images. ...
3
votes
1answer
192 views

Frame ticks not magnified along with plot

I am using Mathematica 11.0 under Linux. I want to export some plots in PNG format, with resolution higher than the notebook display resolution. When I evaluate ...
0
votes
2answers
139 views

From matrix to eps or png

My output is a matrix. I want to save this matrix as a picture whose format is eps or png. How can I convert it? Thank you.
5
votes
1answer
447 views

How to export a Graphics to PNG with BitDepth greater than 8?

According to the PNG ref page, it is possible to generate PNG with 8 or 16 BitDepth. I cannot find a way to impose 16 for a graphics generated by Plot. Here is the example: ...
2
votes
1answer
82 views

How to set webMathematica so to get PNG images and not gif

As the questions says, I want to set webMathematica so all generated images (for instance MSPFormat[something, TraditionalForm] or MSPShow[Plot[Cos[x],{x,-4,4}]] are PNG and not GIF. The final goal is ...
17
votes
4answers
12k views

Saving high-quality graphics through commands

Say I make and display a graph in a Mathematica notebook: graph = CompleteGraph[100] If I drag the corner of the graph to increase its size, and then save it to ...