# Create pixel art!

## Sledgehammer, 22 17 bytes

I noticed I'm no longer winning for some reason and made a minor IO golf

⢟⢡⡂⠴⠒⢂⢜⠧⣘⡨⡏⣻⢈⠯⣧⠼⡫


Corresponding Mathematica code: Export[".bmp",ImageAdjust[Import[#]~Downsample~2, 9!]]& . Takes input from the file with name specified in the program's arguments (for some reason these are put in a file, too), outputs to the file .bmp. There are literally built-ins for everything!

• built-in for reading arbitrary image format
• built-in for downsampling
• built-in for adjusting the contrast by $$\9!\$$
• built-in for writing all that into a file

At least it's not PixelArtify[Input[]].

## Mathematica, 61 31 bytes

ImageAdjust[#~Downsample~2,9!]&


Adjusts the contrast of the downsampled image by the factorial of nine.

## MATL, 18 bytes

Yi2Lt3:K$)127>o2YG  The input is a string with the file name. The output is an image displayed in a window. Input image: Output image: ### Explanation Yi % Implicit input: filename. Read image. Gives an N×M×3 uint8 array 2L % Push [2 2 j] (predefined literal). When interpreted as an index, % this means 2:2:end t % Duplicate 3: % Push [1 2 3] K$)   % 4-input indexing. Downsamples the image by a factor of 2 in each
% dimension of the first two dimensions (vertical and horizontal),
% while keeping the three colour components
127>  % Greater than 127? Gives true (1) or false (0)
o     % Convert to double
2YG   % Display image. For double data type this assumes range from 0 to 1


## Python 3 + imageio, 68 67 bytes

Takes the filename as input, overwrites the original file.

from imageio import*

imageio.imread returns a numpy 3d array of unsigned 8-bit integers corresponding to the RGB value of each pixel. array[::2, ::2] takes every other row and every other column of the array.
Because of the 8-bit data type (~array>>7)-1 is equivalent to ((255-array)//128-1)%256.