[PYTHON IMAGE-SIG] The PIL library -- specification for release 0.1
Fredrik Lundh
fredrik_lundh@ivab.se
Wed, 20 Mar 1996 14:42:22 +0100
Hi everyone,
Thought it's about time I distributed some more information on the
Python Imaging Library I've been hacking on recently. I've attached a
specification that attempts to describe what's in the first public
release.
All comments are welcome.
If everything goes according to the plans, I'll spend the weekend
putting together a release.
Stay tuned/F
--------------------------------------------------------------------
Python Imaging Library (PIL), release 0.1
*** Module Image
class Image:
"A raster image"
mode -- number of bands, pixel type ["L", "P", "RGB", "RGBA", "CMYK"]
palette -- colour table, for "P" type images
size -- image size in pixels
info -- associated data (dictionary)
def convert(mode)
def copy()
def crop(box)
def dither(palette)
def filter(kernel) -- user-defined 3x3, 5x5 convolutions, integer kernels
def histogram()
def load()
def paste(image, box, [alpha])
def resize(size)
def rotate(angle)
def save(filename, [format])
def show() -- currently for unix only
def split()
def transpose(operation)
def transform(size, AFFINE, matrix)
def new(mode, size):
return <Image instance>
def open(filename):
return <Image instance>
def blend(image, image, ratio):
return <Image instance>
def join(mode, band, band...):
return <Image instance>
*** Module ImageFile
class ImageFile(Image):
"A raster image read from file or stream"
def load(file)
class XxxImageFile(ImageFile):
"Read/write XXX file" (see below)
*** Module ImagePalette
class ImagePalette():
"A colour lookup table for palette images"
mode
palette
def negative():
return <ImagePalette instance>
def random():
return <ImagePalette instance>
def wedge():
return <ImagePalette instance>
*** Module ImageFilter
class ImageFilter():
"Represents an environment filter operation"
class ImageFilterKernel(ImageFilter):
"Simple 3x3 and 5x5 integer convolutions"
*** File format support (in release 0.1)
format supported operations
------ --------------------
BMP open/read/write
EPS open (1)
FLI (FLC) open (1)
GBR open/read
GIF open/read
IIF open/read (2) <preliminary>
JPEG (JFIF) open/read/write (3)
MSP open (1)
PBM (PGM/PPM) open/read/write
PCX open/read
PSD open (1)
TIFF open/read (2)
(1) file is identified (mode, size), but not decoded.
(2) restricted, not full baseline support.
(3) requires IJG JPEG support library (libjpeg)
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