Popular recipes tagged "image" but not "graphics"http://code.activestate.com/recipes/tags/image-graphics/2017-04-10T21:14:36-07:00ActiveState Code RecipesMetro Spinner for Tkinter (Python)
2017-04-10T21:14:36-07:00Miguel Martínez Lópezhttp://code.activestate.com/recipes/users/4189907/http://code.activestate.com/recipes/580777-metro-spinner-for-tkinter/
<p style="color: grey">
Python
recipe 580777
by <a href="/recipes/users/4189907/">Miguel Martínez López</a>
(<a href="/recipes/tags/canvas/">canvas</a>, <a href="/recipes/tags/image/">image</a>, <a href="/recipes/tags/pil/">pil</a>, <a href="/recipes/tags/rotation/">rotation</a>, <a href="/recipes/tags/spinner/">spinner</a>, <a href="/recipes/tags/tkinter/">tkinter</a>).
</p>
<p>I create a rotating image class <em>RotatingIcon</em> inspired and based on this code:</p>
<p><a href="http://stackoverflow.com/questions/15736530/python-tkinter-rotate-image-animation" rel="nofollow">http://stackoverflow.com/questions/15736530/python-tkinter-rotate-image-animation</a></p>
<p>Features:</p>
<ul>
<li>Methods to stop and start the animation</li>
<li>The animation automically stops when the window is not mapped, and the animation continues when the window is mapped again</li>
<li>Time setting to control the speed of the animation</li>
<li>All the formats accepted for PIL could be used. XBM format is automatically converted to Tk Bitmap. The advantage of Bitmats is the possibility to change the color of the foreground.</li>
</ul>
<p>I added 6 different styles of spinners with different sizes.</p>
<p>I used fontawesome.io for the icon generation.</p>
<p>For more metro widgets see here:</p>
<p><a href="https://code.activestate.com/recipes/580729-metro-ui-tkinter/" rel="nofollow">https://code.activestate.com/recipes/580729-metro-ui-tkinter/</a></p>
Saving a numpy array to png image using fitz / MuPDF (PyMuPDF) (Python)
2016-03-19T12:57:38-07:00Harald Liederhttp://code.activestate.com/recipes/users/4191581/http://code.activestate.com/recipes/580630-saving-a-numpy-array-to-png-image-using-fitz-mupdf/
<p style="color: grey">
Python
recipe 580630
by <a href="/recipes/users/4191581/">Harald Lieder</a>
(<a href="/recipes/tags/fitz/">fitz</a>, <a href="/recipes/tags/image/">image</a>, <a href="/recipes/tags/mupdf/">mupdf</a>, <a href="/recipes/tags/numpy/">numpy</a>, <a href="/recipes/tags/png/">png</a>, <a href="/recipes/tags/pymupdf/">pymupdf</a>).
Revision 2.
</p>
<p>If a pixel array is defined in numpy, it can be saved as a PNG image VERY fast if you use PyMuPDF.</p>
Image Resizer (Python)
2016-05-22T16:45:52-07:00FB36http://code.activestate.com/recipes/users/4172570/http://code.activestate.com/recipes/580663-image-resizer/
<p style="color: grey">
Python
recipe 580663
by <a href="/recipes/users/4172570/">FB36</a>
(<a href="/recipes/tags/image/">image</a>, <a href="/recipes/tags/images/">images</a>, <a href="/recipes/tags/utilities/">utilities</a>, <a href="/recipes/tags/utility/">utility</a>).
Revision 2.
</p>
<p>Image resizer/converter command-line utility.</p>
2D Discrete Fourier Transform (Python)
2015-01-03T03:39:34-08:00FB36http://code.activestate.com/recipes/users/4172570/http://code.activestate.com/recipes/578997-2d-discrete-fourier-transform/
<p style="color: grey">
Python
recipe 578997
by <a href="/recipes/users/4172570/">FB36</a>
(<a href="/recipes/tags/image/">image</a>, <a href="/recipes/tags/images/">images</a>, <a href="/recipes/tags/image_processing/">image_processing</a>, <a href="/recipes/tags/math/">math</a>, <a href="/recipes/tags/mathematics/">mathematics</a>, <a href="/recipes/tags/signal_processing/">signal_processing</a>).
</p>
<p>2D Discrete Fourier Transform (DFT) and its inverse.</p>
<p>Calculates 2D DFT of an image and recreates the image using inverse 2D DFT.</p>
<p>Computation is slow so only suitable for thumbnail size images.</p>
Draw Text To Image (Python)
2015-07-13T18:04:30-07:00FB36http://code.activestate.com/recipes/users/4172570/http://code.activestate.com/recipes/579013-draw-text-to-image/
<p style="color: grey">
Python
recipe 579013
by <a href="/recipes/users/4172570/">FB36</a>
(<a href="/recipes/tags/image/">image</a>, <a href="/recipes/tags/images/">images</a>, <a href="/recipes/tags/pil/">pil</a>).
Revision 2.
</p>
<p>PIL does not allow resizing default bitmap font.
This code resizes it by itself.</p>
<p>The disadvantage is slow speed but the advantage is it becomes possible to set color of each pixel of text foreground and background.</p>
<p>As an example I set foreground to reverse colors and background to grayscale.</p>
Mandelbrot Fractal image output to ppm file (Python)
2015-01-17T19:21:47-08:00FB36http://code.activestate.com/recipes/users/4172570/http://code.activestate.com/recipes/579006-mandelbrot-fractal-image-output-to-ppm-file/
<p style="color: grey">
Python
recipe 579006
by <a href="/recipes/users/4172570/">FB36</a>
(<a href="/recipes/tags/fractal/">fractal</a>, <a href="/recipes/tags/image/">image</a>, <a href="/recipes/tags/images/">images</a>, <a href="/recipes/tags/math/">math</a>, <a href="/recipes/tags/mathematics/">mathematics</a>).
</p>
<p>It creates image output without using any external library.</p>
<p>PPM image files can be viewed and converted to other image file formats using many applications, GIMP or IrfanView for example.</p>
Image Converter (Python)
2015-01-18T19:14:38-08:00FB36http://code.activestate.com/recipes/users/4172570/http://code.activestate.com/recipes/579007-image-converter/
<p style="color: grey">
Python
recipe 579007
by <a href="/recipes/users/4172570/">FB36</a>
(<a href="/recipes/tags/conversion/">conversion</a>, <a href="/recipes/tags/conversions/">conversions</a>, <a href="/recipes/tags/convert/">convert</a>, <a href="/recipes/tags/converter/">converter</a>, <a href="/recipes/tags/image/">image</a>, <a href="/recipes/tags/images/">images</a>, <a href="/recipes/tags/pil/">pil</a>).
</p>
<p>Converts an image from one format to another using PIL.</p>
Sort images from different sources by picture taken date (Exif) (Python)
2013-09-24T12:43:31-07:00Rutger Saalminkhttp://code.activestate.com/recipes/users/4187940/http://code.activestate.com/recipes/578672-sort-images-from-different-sources-by-picture-take/
<p style="color: grey">
Python
recipe 578672
by <a href="/recipes/users/4187940/">Rutger Saalmink</a>
(<a href="/recipes/tags/chronological/">chronological</a>, <a href="/recipes/tags/exif/">exif</a>, <a href="/recipes/tags/image/">image</a>, <a href="/recipes/tags/order/">order</a>, <a href="/recipes/tags/photo/">photo</a>, <a href="/recipes/tags/picture/">picture</a>).
Revision 3.
</p>
<p>On some occasions/events, pictures will be taken by different camera's, mobile phones, etc. In order to sort these photos chronologically, it does not suffice using the file's date modified/created set by the OS. The following script obtains, from multiple sources, the pictures' taken date stored in the accompanying Exif data and outputs them all chronologically in a single directory.</p>
parse png image (Python)
2013-05-27T22:02:07-07:00judyhttp://code.activestate.com/recipes/users/4186659/http://code.activestate.com/recipes/578534-parse-png-image/
<p style="color: grey">
Python
recipe 578534
by <a href="/recipes/users/4186659/">judy</a>
(<a href="/recipes/tags/height/">height</a>, <a href="/recipes/tags/image/">image</a>, <a href="/recipes/tags/parse/">parse</a>, <a href="/recipes/tags/png/">png</a>, <a href="/recipes/tags/width/">width</a>).
</p>
<p>parse png image find all chunks width height</p>
Auto Insert CSS Image Width/Height Macro: (JavaScript)
2011-11-16T15:23:03-08:00Skye Giordanohttp://code.activestate.com/recipes/users/4179718/http://code.activestate.com/recipes/577948-auto-insert-css-image-widthheight-macro/
<p style="color: grey">
JavaScript
recipe 577948
by <a href="/recipes/users/4179718/">Skye Giordano</a>
(<a href="/recipes/tags/css/">css</a>, <a href="/recipes/tags/height/">height</a>, <a href="/recipes/tags/image/">image</a>, <a href="/recipes/tags/width/">width</a>).
</p>
<p>Based on the macro at <a href="http://community.activestate.com/forum/html-editing-img-tag-expansion-etc" rel="nofollow">http://community.activestate.com/forum/html-editing-img-tag-expansion-etc</a> I hacked together this alternate version that will auto insert the width: and height: of an image background in a CSS rule turning this:</p>
<p>background: url(http://server.com/myImg.jpg) 0 0 no-repeat;</p>
<p>...into this:</p>
<p>background: url(http://server.com/myImg.jpg) 0 0 no-repeat;
height: 252px;
width: 200px;</p>
Convert Image Format (Python)
2011-09-30T10:46:21-07:00s_h_a_i_ohttp://code.activestate.com/recipes/users/4177334/http://code.activestate.com/recipes/577886-convert-image-format/
<p style="color: grey">
Python
recipe 577886
by <a href="/recipes/users/4177334/">s_h_a_i_o</a>
(<a href="/recipes/tags/convert/">convert</a>, <a href="/recipes/tags/format/">format</a>, <a href="/recipes/tags/image/">image</a>).
Revision 2.
</p>
<p>Simple GUI to allow converting images from one format to another. Available formats are: .gif .jpg .png .tif .bmp Uses PIL.</p>
<p>This is short and direct enhancement from recipe <a href="http://code.activestate.com/recipes/180801-convert-image-format" rel="nofollow">http://code.activestate.com/recipes/180801-convert-image-format</a>. Two new features added:</p>
<ul>
<li>Optional deletion of the original image files.</li>
<li>Optional recursive file selection. Implemented using <a href="http://code.activestate.com/recipes/577230-file-path-generator-from-path-patterns/" rel="nofollow">http://code.activestate.com/recipes/577230-file-path-generator-from-path-patterns/</a></li>
</ul>
<p><strong>note</strong> This assumes recipe/577230 is located in filePattern.py (see first import below)</p>
jpg2pdf (Python)
2011-07-17T19:49:58-07:00Sundar Srinivasanhttp://code.activestate.com/recipes/users/4177884/http://code.activestate.com/recipes/577798-jpg2pdf/
<p style="color: grey">
Python
recipe 577798
by <a href="/recipes/users/4177884/">Sundar Srinivasan</a>
(<a href="/recipes/tags/image/">image</a>, <a href="/recipes/tags/jpeg/">jpeg</a>, <a href="/recipes/tags/pdf/">pdf</a>, <a href="/recipes/tags/reportlab/">reportlab</a>).
</p>
<p>Program to convert JPEG to PDF. Technically it just embeds the JPEG in a landscape US letter size PDF page.
When you might need it?: When you have to scan a document and do not have scanner handy, you can take a photograph of the document with webcam, and embed the JPEG into PDF - effectively works as a scanner.</p>
scale rectangle while keeping aspect ratio (Python)
2011-02-20T22:36:39-08:00Romain Dartigueshttp://code.activestate.com/recipes/users/4167472/http://code.activestate.com/recipes/577575-scale-rectangle-while-keeping-aspect-ratio/
<p style="color: grey">
Python
recipe 577575
by <a href="/recipes/users/4167472/">Romain Dartigues</a>
(<a href="/recipes/tags/image/">image</a>, <a href="/recipes/tags/math/">math</a>, <a href="/recipes/tags/resize/">resize</a>, <a href="/recipes/tags/simple/">simple</a>).
Revision 2.
</p>
<p>Resize a rectangle (ie.: an image) while keeping the aspect ratio, without float.</p>
<p>You can scale up and down the proportions so the edges will be either <strong>at most</strong> or <strong>at least</strong> the given one.</p>
Write a PNG image in native Python (Python)
2010-10-28T12:03:52-07:00Campbell Bartonhttp://code.activestate.com/recipes/users/4168177/http://code.activestate.com/recipes/577443-write-a-png-image-in-native-python/
<p style="color: grey">
Python
recipe 577443
by <a href="/recipes/users/4168177/">Campbell Barton</a>
(<a href="/recipes/tags/alpha/">alpha</a>, <a href="/recipes/tags/image/">image</a>, <a href="/recipes/tags/pil/">pil</a>, <a href="/recipes/tags/png/">png</a>, <a href="/recipes/tags/save/">save</a>).
</p>
<p>This is a simple PNG writing function, intended to be as small as possible.
It only supports RGBA 32bit PNGs and the input should be a buffer of rgba bytes.</p>
<p>Tested for python 2 and 3.</p>
Dynamical Billiards Simulation Map (Python)
2010-11-07T18:21:06-08:00FB36http://code.activestate.com/recipes/users/4172570/http://code.activestate.com/recipes/577455-dynamical-billiards-simulation-map/
<p style="color: grey">
Python
recipe 577455
by <a href="/recipes/users/4172570/">FB36</a>
(<a href="/recipes/tags/chaos/">chaos</a>, <a href="/recipes/tags/fractal/">fractal</a>, <a href="/recipes/tags/image/">image</a>, <a href="/recipes/tags/math/">math</a>, <a href="/recipes/tags/mathematics/">mathematics</a>, <a href="/recipes/tags/pil/">pil</a>).
Revision 4.
</p>
<p>It creates fractal-like map plots from the simulation.</p>
<p>(See my other post titled "Dynamical Billiards Simulation" first!)</p>
<p>I had to keep image size and maxSteps small otherwise the calculation takes too long!</p>
<p>(It shows what percentage of calculations completed every 10 seconds also.)</p>
Sierpinski Triangle Fractal using HTML5 Canvas (JavaScript)
2010-07-07T15:07:30-07:00FB36http://code.activestate.com/recipes/users/4172570/http://code.activestate.com/recipes/577294-sierpinski-triangle-fractal-using-html5-canvas/
<p style="color: grey">
JavaScript
recipe 577294
by <a href="/recipes/users/4172570/">FB36</a>
(<a href="/recipes/tags/fractal/">fractal</a>, <a href="/recipes/tags/image/">image</a>, <a href="/recipes/tags/math/">math</a>).
</p>
<p>Sierpinski Triangle Fractal using Line Automaton (1D CA).
The 1D CA rule used is actually Pascal's Triangle Mod 2.
Tested only using Firefox 3.5.</p>
C# Image Resize (Java)
2010-08-06T20:56:16-07:00John Hurlimanhttp://code.activestate.com/recipes/users/4174599/http://code.activestate.com/recipes/577347-c-image-resize/
<p style="color: grey">
Java
recipe 577347
by <a href="/recipes/users/4174599/">John Hurliman</a>
(<a href="/recipes/tags/csharp/">csharp</a>, <a href="/recipes/tags/image/">image</a>, <a href="/recipes/tags/resize/">resize</a>).
</p>
<p>Resize a GDI+ image using C#</p>
Mandelbrot Fractal using HTML5 Canvas (JavaScript)
2012-12-28T01:01:09-08:00FB36http://code.activestate.com/recipes/users/4172570/http://code.activestate.com/recipes/577277-mandelbrot-fractal-using-html5-canvas/
<p style="color: grey">
JavaScript
recipe 577277
by <a href="/recipes/users/4172570/">FB36</a>
(<a href="/recipes/tags/fractal/">fractal</a>, <a href="/recipes/tags/image/">image</a>, <a href="/recipes/tags/math/">math</a>).
Revision 3.
</p>
<p>Mandelbrot Fractal using HTML5 Canvas.
(Do not forget to change file extension to HTML after downloading it.)</p>
Julia fractals (Python)
2010-03-26T04:47:44-07:00FB36http://code.activestate.com/recipes/users/4172570/http://code.activestate.com/recipes/577120-julia-fractals/
<p style="color: grey">
Python
recipe 577120
by <a href="/recipes/users/4172570/">FB36</a>
(<a href="/recipes/tags/fractal/">fractal</a>, <a href="/recipes/tags/image/">image</a>, <a href="/recipes/tags/math/">math</a>, <a href="/recipes/tags/random/">random</a>).
Revision 2.
</p>
<p>It draws a randomly selected Julia fractal set each time.</p>
Floyd-Steinberg dithering algorithm (Python)
2009-06-02T01:28:46-07:00Alan Holthttp://code.activestate.com/recipes/users/4170480/http://code.activestate.com/recipes/576788-floyd-steinberg-dithering-algorithm/
<p style="color: grey">
Python
recipe 576788
by <a href="/recipes/users/4170480/">Alan Holt</a>
(<a href="/recipes/tags/algorithm/">algorithm</a>, <a href="/recipes/tags/dithering/">dithering</a>, <a href="/recipes/tags/floyd_steinberg/">floyd_steinberg</a>, <a href="/recipes/tags/image/">image</a>, <a href="/recipes/tags/manipulation/">manipulation</a>).
</p>
<p>Floyd-Steinberg dithering is an image dithering algorithm (see <a href="http://en.wikipedia.org/wiki/Floyd-Steinberg" rel="nofollow">http://en.wikipedia.org/wiki/Floyd-Steinberg</a> for more details). While the algorithm is mainly for image manipulation, I use it to create random locations for sensor networt devices.</p>