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These challenges involve processing pre-existing image files, by altering them in some way, gathering statistics, or other image processing tasks.
4
votes
Determining vertical slices
Python 2, 30 bytes
There is a surprisingly elegant solution using many of my favourite built-in functions chained together.
lambda c:sum(map(all,zip(*c)))
Using the test image from @Lynn:
>>> ima …
4
votes
Hungry Image Snake - Hole #3
Python 2, Score: 1.205
I put together a quick Python solution some time ago but forgot to post it. Here it is. It finds the richest blocks in the image, then travels to each block, eating all the bes …
5
votes
Recognise Stack Exchange Sites by Their Icon
Python 2.7, 1906 1889 bytes
This solution uses CRC32 on the pixel data to make a unique 2 digit base 95 identifier. The index of the identifier is then used to look up the answer string.
The trick …
35
votes
4
answers
2k
views
Image Battle of Colours
CONGRATULATIONS to @kuroineko for the best entry and winning the 200 bounty from @TheBestOne (excellent sportsmanship!).
Write a program to colour as much of an image as possible before opposition …
24
votes
Paint by Numbers (using programming, not numbers)
Python 2 and PIL: Psychedelic Worlds
I have used a simple algorithm to flood fill each white-ish area with a color from a cycling palette. The result is very colorful, but not very lifelike.
Note th …
11
votes
1
answer
504
views
How many shapes are in this picture?
Children are very good at classifying objects and counting them. Computers seem to have more trouble. This is a simplified version of this problem. Can you write a small program that can classify and …
0
votes
Reverse Bayer Filter of an image
Python 2, 256 275 bytes
First I simplified the original code:
from PIL import Image
from numpy import*
import sys
# Open image and put it in a numpy array
srcArray = array(Image.open(sys.argv[1]), …
21
votes
Patch the Image
Python 2 and PIL
This program blends copies of regions North, South, East, and West to create replacement pixels that use colours, textures, and shading from the local image region.
The example output …
12
votes
Fun with flags!
Python 2, Score = 68 89
This solution uses the hash of the flag image file to create an index into a list of the country abbreviations. If more than one flag hashed to an index, only the first abbrev …
15
votes
1
answer
547
views
Robot roadie needed to pack the truck
As the band's roadie, you have to pack the truck. Your program will place the packages so that they fit in the smallest height.
A badly packed truck
Rules
Packages may be rotated through multiple …
12
votes
2
answers
2k
views
Build a Mining Robot
Your program will control a mining robot searching underground for valuable
minerals. Your robot will tell the controller where you want to move and dig,
and the controller will provide feedback on yo …
3
votes
Build a Mining Robot
Python 2, Sample Miner, 350
This is an example of the minimum code for a mining robot. It just digs straight down until its battery gives out (all robots start pointing down). It only earns a score o …
2
votes
Build a Mining Robot
Python 2, Robot Miner Python Template, 410
This is a mining robot template to show how a robot operates and provide a framework for building your own robots. There is a section for analyzing the mine …