Gecko [ www.utparral.edu.mx ]

Name	Size	Permission
__pycache__	[ DIR ]	drwxr-xr-x
BdfFontFile.py	2.75 KB	-rw-r--r--
_binary.py	2 KB	-rw-r--r--
BlpImagePlugin.py	14.23 KB	-rw-r--r--
BmpImagePlugin.py	13.91 KB	-rw-r--r--
BufrStubImagePlugin.py	1.48 KB	-rw-r--r--
ContainerIO.py	2.82 KB	-rw-r--r--
CurImagePlugin.py	1.64 KB	-rw-r--r--
DcxImagePlugin.py	2.09 KB	-rw-r--r--
DdsImagePlugin.py	7.8 KB	-rw-r--r--
EpsImagePlugin.py	11.64 KB	-rw-r--r--
ExifTags.py	9.22 KB	-rw-r--r--
features.py	9.17 KB	-rw-r--r--
FitsStubImagePlugin.py	2.5 KB	-rw-r--r--
FliImagePlugin.py	4.16 KB	-rw-r--r--
FontFile.py	2.7 KB	-rw-r--r--
FpxImagePlugin.py	6.5 KB	-rw-r--r--
FtexImagePlugin.py	3.23 KB	-rw-r--r--
GbrImagePlugin.py	2.73 KB	-rw-r--r--
GdImageFile.py	2.41 KB	-rw-r--r--
GifImagePlugin.py	32.05 KB	-rw-r--r--
GimpGradientFile.py	3.27 KB	-rw-r--r--
GimpPaletteFile.py	1.24 KB	-rw-r--r--
GribStubImagePlugin.py	1.48 KB	-rw-r--r--
Hdf5StubImagePlugin.py	1.48 KB	-rw-r--r--
IcnsImagePlugin.py	11.46 KB	-rw-r--r--
IcoImagePlugin.py	10.57 KB	-rw-r--r--
ImageChops.py	7.13 KB	-rw-r--r--
ImageCms.py	36.22 KB	-rw-r--r--
ImageColor.py	8.52 KB	-rw-r--r--
ImageDraw2.py	4.9 KB	-rw-r--r--
ImageDraw.py	33.9 KB	-rw-r--r--
ImageEnhance.py	3.12 KB	-rw-r--r--
ImageFile.py	20.58 KB	-rw-r--r--
ImageFilter.py	15.75 KB	-rw-r--r--
ImageFont.py	44.29 KB	-rw-r--r--
ImageGrab.py	3.54 KB	-rw-r--r--
ImageMath.py	7.44 KB	-rw-r--r--
ImageMode.py	2.03 KB	-rw-r--r--
ImageMorph.py	7.59 KB	-rw-r--r--
ImageOps.py	19.82 KB	-rw-r--r--
ImagePalette.py	7.66 KB	-rw-r--r--
ImagePath.py	336 B	-rw-r--r--
Image.py	118.51 KB	-rw-r--r--
ImageQt.py	6.54 KB	-rw-r--r--
ImageSequence.py	1.81 KB	-rw-r--r--
ImageShow.py	7.75 KB	-rw-r--r--
ImageStat.py	3.81 KB	-rw-r--r--
ImageTransform.py	2.78 KB	-rw-r--r--
ImageWin.py	7.02 KB	-rw-r--r--
_imagingcms.cpython-310-x86_64-linux-gnu.so	37.8 KB	-rw-r--r--
_imaging.cpython-310-x86_64-linux-gnu.so	438.53 KB	-rw-r--r--
_imagingft.cpython-310-x86_64-linux-gnu.so	41.46 KB	-rw-r--r--
_imagingmath.cpython-310-x86_64-linux-gnu.so	18.43 KB	-rw-r--r--
_imagingmorph.cpython-310-x86_64-linux-gnu.so	14.46 KB	-rw-r--r--
ImImagePlugin.py	10.48 KB	-rw-r--r--
ImtImagePlugin.py	2.15 KB	-rw-r--r--
__init__.py	1.7 KB	-rw-r--r--
IptcImagePlugin.py	5.58 KB	-rw-r--r--
Jpeg2KImagePlugin.py	10.14 KB	-rw-r--r--
JpegImagePlugin.py	27.79 KB	-rw-r--r--
JpegPresets.py	12.06 KB	-rw-r--r--
__main__.py	41 B	-rw-r--r--
McIdasImagePlugin.py	1.71 KB	-rw-r--r--
MicImagePlugin.py	2.55 KB	-rw-r--r--
MpegImagePlugin.py	1.76 KB	-rw-r--r--
MpoImagePlugin.py	4.3 KB	-rw-r--r--
MspImagePlugin.py	5.4 KB	-rw-r--r--
PaletteFile.py	1.08 KB	-rw-r--r--
PalmImagePlugin.py	8.89 KB	-rw-r--r--
PcdImagePlugin.py	1.44 KB	-rw-r--r--
PcfFontFile.py	6.2 KB	-rw-r--r--
PcxImagePlugin.py	5.73 KB	-rw-r--r--
PdfImagePlugin.py	7.16 KB	-rw-r--r--
PdfParser.py	33.75 KB	-rw-r--r--
PixarImagePlugin.py	1.59 KB	-rw-r--r--
PngImagePlugin.py	43.11 KB	-rw-r--r--
PpmImagePlugin.py	4.34 KB	-rw-r--r--
PsdImagePlugin.py	7.88 KB	-rw-r--r--
PSDraw.py	6.56 KB	-rw-r--r--
PyAccess.py	9.38 KB	-rw-r--r--
SgiImagePlugin.py	5.95 KB	-rw-r--r--
SpiderImagePlugin.py	9.31 KB	-rw-r--r--
SunImagePlugin.py	4.18 KB	-rw-r--r--
TarIO.py	1.41 KB	-rw-r--r--
TgaImagePlugin.py	6.32 KB	-rw-r--r--
TiffImagePlugin.py	71.17 KB	-rw-r--r--
TiffTags.py	14.93 KB	-rw-r--r--
_tkinter_finder.py	525 B	-rw-r--r--
_util.py	359 B	-rw-r--r--
_version.py	50 B	-rw-r--r--
WalImageFile.py	5.42 KB	-rw-r--r--
_webp.cpython-310-x86_64-linux-gnu.so	28.09 KB	-rw-r--r--
WebPImagePlugin.py	10.58 KB	-rw-r--r--
WmfImagePlugin.py	4.53 KB	-rw-r--r--
XbmImagePlugin.py	2.37 KB	-rw-r--r--
XpmImagePlugin.py	2.99 KB	-rw-r--r--
XVThumbImagePlugin.py	1.89 KB	-rw-r--r--

Code Editor : SpiderImagePlugin.py

#
# The Python Imaging Library.
#
# SPIDER image file handling
#
# History:
# 2004-08-02    Created BB
# 2006-03-02    added save method
# 2006-03-13    added support for stack images
#
# Copyright (c) 2004 by Health Research Inc. (HRI) RENSSELAER, NY 12144.
# Copyright (c) 2004 by William Baxter.
# Copyright (c) 2004 by Secret Labs AB.
# Copyright (c) 2004 by Fredrik Lundh.
#

##
# Image plugin for the Spider image format.  This format is is used
# by the SPIDER software, in processing image data from electron
# microscopy and tomography.
##

#
# SpiderImagePlugin.py
#
# The Spider image format is used by SPIDER software, in processing
# image data from electron microscopy and tomography.
#
# Spider home page:
# https://spider.wadsworth.org/spider_doc/spider/docs/spider.html
#
# Details about the Spider image format:
# https://spider.wadsworth.org/spider_doc/spider/docs/image_doc.html
#
import os
import struct
import sys

from PIL import Image, ImageFile

def isInt(f):
    try:
        i = int(f)
        if f - i == 0:
            return 1
        else:
            return 0
    except (ValueError, OverflowError):
        return 0

iforms = [1, 3, -11, -12, -21, -22]

# There is no magic number to identify Spider files, so just check a
# series of header locations to see if they have reasonable values.
# Returns no. of bytes in the header, if it is a valid Spider header,
# otherwise returns 0

def isSpiderHeader(t):
    h = (99,) + t  # add 1 value so can use spider header index start=1
    # header values 1,2,5,12,13,22,23 should be integers
    for i in [1, 2, 5, 12, 13, 22, 23]:
        if not isInt(h[i]):
            return 0
    # check iform
    iform = int(h[5])
    if iform not in iforms:
        return 0
    # check other header values
    labrec = int(h[13])  # no. records in file header
    labbyt = int(h[22])  # total no. of bytes in header
    lenbyt = int(h[23])  # record length in bytes
    if labbyt != (labrec * lenbyt):
        return 0
    # looks like a valid header
    return labbyt

def isSpiderImage(filename):
    with open(filename, "rb") as fp:
        f = fp.read(92)  # read 23 * 4 bytes
    t = struct.unpack(">23f", f)  # try big-endian first
    hdrlen = isSpiderHeader(t)
    if hdrlen == 0:
        t = struct.unpack("<23f", f)  # little-endian
        hdrlen = isSpiderHeader(t)
    return hdrlen

class SpiderImageFile(ImageFile.ImageFile):

format = "SPIDER"
    format_description = "Spider 2D image"
    _close_exclusive_fp_after_loading = False

def _open(self):
        # check header
        n = 27 * 4  # read 27 float values
        f = self.fp.read(n)

try:
            self.bigendian = 1
            t = struct.unpack(">27f", f)  # try big-endian first
            hdrlen = isSpiderHeader(t)
            if hdrlen == 0:
                self.bigendian = 0
                t = struct.unpack("<27f", f)  # little-endian
                hdrlen = isSpiderHeader(t)
            if hdrlen == 0:
                raise SyntaxError("not a valid Spider file")
        except struct.error as e:
            raise SyntaxError("not a valid Spider file") from e

h = (99,) + t  # add 1 value : spider header index starts at 1
        iform = int(h[5])
        if iform != 1:
            raise SyntaxError("not a Spider 2D image")

self._size = int(h[12]), int(h[2])  # size in pixels (width, height)
        self.istack = int(h[24])
        self.imgnumber = int(h[27])

if self.istack == 0 and self.imgnumber == 0:
            # stk=0, img=0: a regular 2D image
            offset = hdrlen
            self._nimages = 1
        elif self.istack > 0 and self.imgnumber == 0:
            # stk>0, img=0: Opening the stack for the first time
            self.imgbytes = int(h[12]) * int(h[2]) * 4
            self.hdrlen = hdrlen
            self._nimages = int(h[26])
            # Point to the first image in the stack
            offset = hdrlen * 2
            self.imgnumber = 1
        elif self.istack == 0 and self.imgnumber > 0:
            # stk=0, img>0: an image within the stack
            offset = hdrlen + self.stkoffset
            self.istack = 2  # So Image knows it's still a stack
        else:
            raise SyntaxError("inconsistent stack header values")

if self.bigendian:
            self.rawmode = "F;32BF"
        else:
            self.rawmode = "F;32F"
        self.mode = "F"

self.tile = [("raw", (0, 0) + self.size, offset, (self.rawmode, 0, 1))]
        self.__fp = self.fp  # FIXME: hack

@property
    def n_frames(self):
        return self._nimages

@property
    def is_animated(self):
        return self._nimages > 1

# 1st image index is zero (although SPIDER imgnumber starts at 1)
    def tell(self):
        if self.imgnumber < 1:
            return 0
        else:
            return self.imgnumber - 1

def seek(self, frame):
        if self.istack == 0:
            raise EOFError("attempt to seek in a non-stack file")
        if not self._seek_check(frame):
            return
        self.stkoffset = self.hdrlen + frame * (self.hdrlen + self.imgbytes)
        self.fp = self.__fp
        self.fp.seek(self.stkoffset)
        self._open()

# returns a byte image after rescaling to 0..255
    def convert2byte(self, depth=255):
        (minimum, maximum) = self.getextrema()
        m = 1
        if maximum != minimum:
            m = depth / (maximum - minimum)
        b = -m * minimum
        return self.point(lambda i, m=m, b=b: i * m + b).convert("L")

# returns a ImageTk.PhotoImage object, after rescaling to 0..255
    def tkPhotoImage(self):
        from PIL import ImageTk

return ImageTk.PhotoImage(self.convert2byte(), palette=256)

def _close__fp(self):
        try:
            if self.__fp != self.fp:
                self.__fp.close()
        except AttributeError:
            pass
        finally:
            self.__fp = None

# --------------------------------------------------------------------
# Image series

# given a list of filenames, return a list of images
def loadImageSeries(filelist=None):
    """create a list of :py:class:`~PIL.Image.Image` objects for use in a montage"""
    if filelist is None or len(filelist) < 1:
        return

imglist = []
    for img in filelist:
        if not os.path.exists(img):
            print(f"unable to find {img}")
            continue
        try:
            with Image.open(img) as im:
                im = im.convert2byte()
        except Exception:
            if not isSpiderImage(img):
                print(img + " is not a Spider image file")
            continue
        im.info["filename"] = img
        imglist.append(im)
    return imglist

# --------------------------------------------------------------------
# For saving images in Spider format

def makeSpiderHeader(im):
    nsam, nrow = im.size
    lenbyt = nsam * 4  # There are labrec records in the header
    labrec = int(1024 / lenbyt)
    if 1024 % lenbyt != 0:
        labrec += 1
    labbyt = labrec * lenbyt
    hdr = []
    nvalues = int(labbyt / 4)
    for i in range(nvalues):
        hdr.append(0.0)

if len(hdr) < 23:
        return []

# NB these are Fortran indices
    hdr[1] = 1.0  # nslice (=1 for an image)
    hdr[2] = float(nrow)  # number of rows per slice
    hdr[5] = 1.0  # iform for 2D image
    hdr[12] = float(nsam)  # number of pixels per line
    hdr[13] = float(labrec)  # number of records in file header
    hdr[22] = float(labbyt)  # total number of bytes in header
    hdr[23] = float(lenbyt)  # record length in bytes

# adjust for Fortran indexing
    hdr = hdr[1:]
    hdr.append(0.0)
    # pack binary data into a string
    hdrstr = []
    for v in hdr:
        hdrstr.append(struct.pack("f", v))
    return hdrstr

def _save(im, fp, filename):
    if im.mode[0] != "F":
        im = im.convert("F")

hdr = makeSpiderHeader(im)
    if len(hdr) < 256:
        raise OSError("Error creating Spider header")

# write the SPIDER header
    fp.writelines(hdr)

rawmode = "F;32NF"  # 32-bit native floating point
    ImageFile._save(im, fp, [("raw", (0, 0) + im.size, 0, (rawmode, 0, 1))])

def _save_spider(im, fp, filename):
    # get the filename extension and register it with Image
    ext = os.path.splitext(filename)[1]
    Image.register_extension(SpiderImageFile.format, ext)
    _save(im, fp, filename)

# --------------------------------------------------------------------

Image.register_open(SpiderImageFile.format, SpiderImageFile)
Image.register_save(SpiderImageFile.format, _save_spider)

if __name__ == "__main__":

if len(sys.argv) < 2:
        print("Syntax: python3 SpiderImagePlugin.py [infile] [outfile]")
        sys.exit()

filename = sys.argv[1]
    if not isSpiderImage(filename):
        print("input image must be in Spider format")
        sys.exit()

with Image.open(filename) as im:
        print("image: " + str(im))
        print("format: " + str(im.format))
        print("size: " + str(im.size))
        print("mode: " + str(im.mode))
        print("max, min: ", end=" ")
        print(im.getextrema())

if len(sys.argv) > 2:
            outfile = sys.argv[2]

# perform some image operation
            im = im.transpose(Image.FLIP_LEFT_RIGHT)
            print(
                f"saving a flipped version of {os.path.basename(filename)} "
                f"as {outfile} "
            )
            im.save(outfile, SpiderImageFile.format)

${this.title}

Code Editor : SpiderImagePlugin.py