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Closed 9 years ago.
I am in need to draw some diagrams for documentation. Thinks like tables, flow charts, tree, etc.
I usually work in Linux environments and use Latex to write text and write mathematical formulas and equations. What else do you use to draw the things above?
Thanks in advance.
A unsorted list of tools that I generally like:
PGF: A really useful LaTeX macro package for drawing all kind of professional graphics.
Graphviz: A tool to "program" directed graphs and other things with automatical layout.
Balsamique: Web-tool for prototyping GUIs with PDF-export.
Ascii-Art-Tools like Ditaa or aafigure
Dia Diagram Editor: old but usefull GUI for drawing diagrams
Related
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Closed 9 years ago.
am doing my final project that includes face recognition and am trying to implement it on matlab. can anybody help me on getting some resources on each algorithms and their pro's and cons. plus if i get their matlab implementation i would be glad.
i've tried PCA(Eigenfaces) but in some resources it says it not a good algorithm anymore. so am looking for an alternative.
The Viola Jones Face Detector is nice but of course it is just detection:
http://www.cs.ubc.ca/~lowe/425/slides/13-ViolaJones.pdf
if you want the best results you can try fusion by employing multiple methods at once and recogintion rate can increase considerably if performance is not an issue
One may use Gabor wavelets
face recognition in opencv
a matlab code uses Gabor feature
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Closed 10 years ago.
For a project in computer science I am to implement a further improvement to my ray-tracing renderer.
Features at the moment:
SIMD implementation of ray-triangle intersection
BVH using AABB. (SIMD ray-box intersection)
Light calculations: Diffuse, Specular (reflection, refraction), Glossy Highlights
HDR image based lighting
Tone mapping
I'm looking for suggestions onto what algorithm that I might try to implement to win the rendering contest ;).
Requirements:
Tough (challenging) and interesting, but yet doable for a 3 year bachelor student.
Physically correct implementation.
Good description research papers, implementation tutorials, or theory explained. (E.G. Slides)
Should be able to be done in about 2 weeks time.
Maybe something that would make me able to do physically based rendering of a character, hair, clothes and so on.
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Closed 10 years ago.
Is there any book or site that describes the algorithms that people use in building interactive visualizations, like:
Spacing stuff evenly
Sizing options, e.g. according to popularity
Applying physics like gravity and friction
Organic growth etc.
I don't want to reinvent the wheel.
I once read this survey of graph drawing algorithm: Algorithms for Drawing Graphs: an Annotated Bibliography. Very extensive introduction of all kinds of techniques to draw graphs, including maintaining the aesthetics of the visualization.
I also read several papers on how to draw physics-based auto-spacing graphs a while ago but I don't remember where I saved them. Will update the answer soon. --> Here are a few:
Accelerated Force Computation for Physics-Based Information Visualization
Graph Drawing by Force-directed Placement
If you like scholar-type publications, have a look at the conferences such as VIS, VAST and InfoVis.
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Closed 10 years ago.
Click on one point on a widget and drag it to another point on another widget, and a connection (wire, cable, line) is made between the two.
I'm looking for a (open source) web toolkit that has this type of widget, but I don't even know what it is called. So it's a bit difficult to find. Examples would be nice.
Check out this project: https://github.com/sporritt/jsPlumb.
Here's the demo in action: http://jsplumb.org/jquery/demo.html
we have done something like this in Flash ActionScript with getting the initial co-ordinates of the items and the co-ordinates of of the destination position.
Further we called DrawLine function using these for points and it was very eay task.
For opensource i am not sure but it should be very easy in my opinion.
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Closed 10 years ago.
Is there a hash function that is stable to small changes in text? I'm looking for the opposite of a cryptographic hash, where small changes in the source lead to huge changes in the result.
Something like a perceptual hash for text. Is there such a thing?
Edited: by "small changes in text" I mean changes in punctuation, correction of ortographic / grammatical mistakes, etc. The text itself is an article, like a wikipedia entry (but it can be much smaller, like 2 or 3 paragraphs).
Bonus points if somebody can point to a Python implementation.
You're looking for locality sensitive hashing.