jcupitt

#!/usr/bin/python

import sys

R = int(sys.argv[1])
G = int(sys.argv[2])
B = int(sys.argv[3])

# assume RGB are 0 - 255 ... convert to 0 - 1
R /= 255.0

jcupitt

#!/usr/bin/python

# untile a dzsave --layout google level

# tiles are expected to be named as ARG/y/x.jpg, so use as:
#
#   untile-google.py ~/pics/somepyramid/4 out.jpg
#   
# to make out.jpg, level 4 of somepyramid reassembled
    

jcupitt

#!/usr/bin/python3

# untile a dzsave --layout dz level

# tiles are expected to be named as ARG/x_y.jpeg, so use as:
#
#   untile-dz.py ~/pics/somepyramid_files/11 out.jpg
#
# to make out.jpg, level 4 of somepyramid reassembled

jcupitt

#!/usr/bin/python3

import sys
import pyvips
from numpy import linalg

stain = [
    [0.468, 0.023, 0.767],
    [0.721, 0.141, 0.576],
    [0.511, 0.990, 0.284]

jcupitt

#!/usr/bin/env ruby

# "trim" is nnow built in, so this is easy

require 'vips'

im = Vips::Image.new_from_file(ARGV[0])

left, top, width, height = im.find_trim
im = im.crop(left, top, width, height)

jcupitt

#!/usr/bin/python3

import random
import time
import sys

import pyvips

if len(sys.argv) != 4:
    print("usage: ./fetch-vs-crop.py IMAGE SIZE N-TILES")

jcupitt

import pyvips

# rotate an image with centre crop and reflection fill

im = pyvips.Image.new_from_file("/home/john/pics/k2.jpg")

# pyvips rotate always fills any new pixels which appear around the image edges
# with 0 (black). To have something else in there, we need to expand the image
# first, then crop it down to just the bit we need.

jcupitt

/* vips8 introspection demo
 *
 * compile with:
 *
 * 	gcc -g -Wall introspect.c `pkg-config vips --cflags --libs`
 *
 * try:
 *
 * 	./a.out embed
 *

jcupitt

#!/usr/bin/python

import sys
from gi.repository import Vips

N_BINS = 10
BIN_SIZE = 256 / N_BINS

im = Vips.Image.new_from_file(sys.argv[1], access = Vips.Access.SEQUENTIAL)

jcupitt

/* compile with
 *
 *  gcc -Wall createtiff.c `pkg-config libtiff --cflags --libs`
 */

#include <tiffio.h>

int
main (int argc, const char **argv)
{