[PYTHON IMAGE-SIG] Any comments on PIL 0.0?

[Fredrik Lundh]

(The silence on this list is overwhelming...)

Have anyone more than Jack and David even tried out the release?
Doesn't anyone have any comments, bugs, suggestions, flames???

I've added quite a few things to the library, on my way to a second
release, but I do need some feedback to see if I'm still on the track.

+ What's missing in the library?

+ Can you live with the PIL/IMG marriage for a while, or should
  I complete the ImageIO portions before doing anything else?

+ Was the handbook ok?  Can you handle Postscript files, or is
  some other format preferred?

+ What's needed before we can announce it to the world?
  (i.e. comp.lang.python)

Regards	/F

--------------------------------------------------------------------

For latecomers, the current distribution should still be available
from:

  http://www.python.org/sigs/image-sig/Imaging-0.0.tar.gz
  http://www.python.org/sigs/image-sig/Imaging-0.1-handbook-draft.ps.gz

--------------------------------------------------------------------

And here's a summary of the current status.  The most notable addition
is the channel operations ("chops"), but the point method is not a bad
one either...

	j = i.point(lambda a: a * 1.2) # lighten up

----------------------------
Python Imaging Library (PIL)
----------------------------

Current status (~0.08)

*** Module Image

class Image:
    "A raster image"
    mode -- number of bands, pixel type ["L", "RGB", "RGBA", "CMYK"]
    palette -- colour table, for "P" type images *NOTYET*
    size -- image size in pixels
    info -- associated data (dictionary)
    def convert(mode)
    def copy()
    def crop(box)
    def filter(kernel)
    def histogram()
    def load()
    def paste(image, box, [alpha])
    def point(table) *NEW*
    def point(function) *NEW*
    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)
def open(filename)
def blend(image, image, ratio)
def composite(image, image, mask) *NEW* (equivalent to copy+paste(mask))
def eval(function, images...) *NEW* (equivalent to point(function))
def merge(mode, bands) *RENAMED*

*** Module ImageChops (*BETTER NAME NEEDED!*)

def constant(image, value) *NEW*
def duplicate(image) *NEW*
def invert(image) *NEW*
def lighter(image1, image2) *NEW*
def darker(image1, image2) *NEW*
def difference(image1, image2) *NEW*
def multiply(image1, image2) *NEW*
def screen(image1, image2) *NEW*
def add(image1, image2, [scale, offset]) *NEW*
def subtract(image1, image2, [scale, offset]) *NEW*
def blend(image1, image2, alpha)
def composite(image1, image2, mask)

(Note that for full math support, you should use the Numerical Python
 extension instead.  An interface will be provided later!)

*** Module ImageEnhance

class Color
class Contrast
class Brightness
class Sharpness

*** 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 ImageFilter

class ImageFilter():
    "Represents an environment filtering operation"

class ImageSimpleKernel(ImageFilter):
    "Simple 3x3 and 5x5 integer convolutions"

*** Module ImageISOFilter

~20 standard impulse filters from ISO 12087-2

*** Module ImagePalette

class ImagePalette():
    "A colour lookup table for palette images"
    mode
    palette

def negative()
def random()
def wedge()

*** File format support

format		supported operations
------		--------------------
BMP		open/read/write *NOTYET*
EPS		open (1)
FLI (FLC)	open (1)
GBR		open/read *NOTYET*
GIF		open/read *IMG*
JPEG (JFIF)	open/read/write (3) *IMG*
MSP		open (1)
PBM (PGM/PPM)	open/read/write
PCX		open/read *NOTYET*
PSD		open (1) *NOTYET*
SGI		read *IMG*
TIFF		open/read (2) *IMG*

(1) file is identified (mode, size, info), but not decoded.
(2) restricted, not full baseline support.
(3) requires IJG JPEG support library (libjpeg)

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