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@iandees
iandees / dlib_plus_osm.md
Last active May 30, 2018 19:07
Detecting Road Signs in Mapillary Images with dlib C++

image

I've been interested in computer vision for a long time, but I haven't had any free time to make any progress until this holiday season. Over Christmas and the New Years I experimented with various methodologies in OpenCV to detect road signs and other objects of interest to OpenStreetMap. After some failed experiments with thresholding and feature detection, the excellent /r/computervision suggested using the dlib C++ module because it has more consistently-good documentation and the pre-built tools are faster.

After a day or two figuring out how to compile the examples, I finally made some progress:

Compiling dlib C++ on a Mac with Homebrew

  1. Clone dlib from Github to your local machine:
@random-person-001
random-person-001 / chordplot1.py
Created February 12, 2017 23:46
Plot some data as a filled chord graph in plotly with python, using essentially example code.
#
# Plot some data as a filled chord graph!
# The data labels will be '[label1] donated $[qty] to [label2].
#
# You should have plotly installed and set up for this to work.
#
# By Riley, Feb 2017, but almost all of it stolen from examples
# at https://plot.ly/python/filled-chord-diagram/
#
@dotob
dotob / d3-server.coffee
Created January 6, 2016 14:12
Directly render and serve d3 visualizations from a nodejs server.
# Start `coffee d3-server.coffee`
# Then visit http://localhost:1337/
# originally from: https://gist.github.com/Caged/6407459
d3 = require('d3')
http = require('http')
jsdom = require('jsdom')
http.createServer((req, res) ->
# Chrome automatically sends a requests for favicons
# Looks like https://code.google.com/p/chromium/issues/detail?id=39402 isn't
@chipx86
chipx86 / streaming-tar.py
Last active October 20, 2022 21:17
Sample code to build a tar chunk-by-chunk and stream it out all at once.
#!/usr/bin/env python
#
# Building a tar file chunk-by-chunk.
#
# This is a quick bit of sample code for streaming data to a tar file,
# building it piece-by-piece. The tarfile is built on-the-fly and streamed
# back out. This is useful for web applications that need to dynamically
# build a tar file without swamping the server.
import os
import sys
@macournoyer
macournoyer / Output
Last active January 9, 2023 15:12
A Neural Network framework in 25 LOC
$ python xor.py
Training:
Epoch 0 MSE: 1.765
Epoch 100 MSE: 0.015
Epoch 200 MSE: 0.005
* Target MSE reached *
Evaluating:
1 XOR 0 = 1 ( 0.904) Error: 0.096
0 XOR 1 = 1 ( 0.908) Error: 0.092
1 XOR 1 = 0 (-0.008) Error: 0.008
@SimplGy
SimplGy / renameToHash.sh
Last active July 27, 2023 07:30
Rename files with a hash based on their contents. eg: `abc.jpg` to `3101ace8db9f.jpg`. Useful for detecting duplicates.
#!/bin/bash
# TODO: skip tiny files (so small they couldn't be photos)
# TODO: make sure sym links and other file system oddities are handled
# TODO: look at paralellization for perf boost
#
# Constants
#
CHAR_COUNT=12
BLOCK_COUNT=6
@aparrish
aparrish / spacy_intro.ipynb
Last active August 9, 2023 01:41
NLP Concepts with spaCy. Code examples released under CC0 https://creativecommons.org/choose/zero/, other text released under CC BY 4.0 https://creativecommons.org/licenses/by/4.0/
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@BichengLUO
BichengLUO / mp4_to_gif.bash
Created February 7, 2018 23:30
An ffmpeg script to convert MP4 to GIF with high quality
ffmpeg -y -i input.mp4 -vf fps=10,scale=716:-1:flags=lanczos,palettegen palette.png
ffmpeg -i input.mp4 -i palette.png -filter_complex "fps=10,scale=716:-1:flags=lanczos[x];[x][1:v]paletteuse" output.gif
@hi2p-perim
hi2p-perim / ssecheck.cpp
Last active March 17, 2024 14:50
Check SSE/AVX instruction support.
/*
Check SSE/AVX support.
This application can detect the instruction support of
SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, SSE4a, SSE5, and AVX.
*/
#include <iostream>
#ifdef _MSC_VER
#include <intrin.h>
#endif
@haasn
haasn / about:config.md
Last active April 2, 2024 18:46
Firefox bullshit removal via about:config

Firefox bullshit removal

Updated: Just use qutebrowser (and disable javascript). The web is done for.