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Contributed modules by Riccardo Trocca. Extended pixmap wrapper, NumPy visualiser and QuickTime to images.

This commit is contained in:
Jack Jansen 2000-09-22 12:46:19 +00:00
parent fdd2269fcc
commit d35509a82d
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46
Mac/Contrib/ImageHelpers/ExtPixMapWrapper.py Normal file
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'''
A really quick and dirty hack to extend PixMapWrapper
They are mere copies of the toImage and fromImage methods.
Riccardo Trocca (rtrocca@libero.it)
'''
from PixMapWrapper import *
import Numeric
class ExtPixMapWrapper(PixMapWrapper):
def toNumeric(self):
data = self.tostring()[1:] + chr(0)
bounds = self.bounds
tmp=Numeric.fromstring(data,Numeric.UnsignedInt8)
#tmp.shape=(bounds[3]-bounds[1],bounds[2]-bounds[0],4)
tmp.shape=(bounds[2]-bounds[0],bounds[3]-bounds[1],4)
return Numeric.transpose(tmp,(1,0,2))
def fromNumeric(self,num):
s=num.shape
x=num.shape[1]
y=num.shape[0]
#bands=1 Greyscale image
#bands=3 RGB image
#bands=4 RGBA image
if len(s)==2:
bands=1
num=Numeric.resize(num,(y,x,1))
else:
bands=num.shape[2]
if bands==1:
num=Numeric.concatenate((num,num,num),2)
bands=3
if bands==3:
alpha=Numeric.ones((y,x))*255
alpha.shape=(y,x,1)
num=Numeric.concatenate((num,alpha),2)
data=chr(0)+Numeric.transpose(num,(1,0,2)).astype(Numeric.UnsignedInt8).tostring()
PixMapWrapper.fromstring(self,data,x,y)

277
Mac/Contrib/ImageHelpers/ImageMac.py Normal file
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'''
ImageMac.py by Trocca Riccardo (rtrocca@libero.it)
This module provides functions to display images and Numeric arrays
It provides two classes ImageMacWin e NumericMacWin and two simple methods showImage and
showNumeric.
They work like this:
showImage(Image,"optional window title",zoomFactor)
the same for showNumeric
zoomfactor (defaults to 1) allows to zoom in the image by a factor of 1x 2x 3x and so on
I did't try with a 0.5x or similar.
The windows don't provide a scrollbar or a resize box.
Probably a better solution (and more similar to the original implementation in PIL and NumPy)
would be to save a temp file is some suitable format and then make an application (through appleevents) to open it.
Good guesses should be GraphicConverter or PictureViewer.
However the classes ImageMacWin e NumericMacWin use an extended version of PixMapWrapper in order to
provide an image buffer and then blit it in the window.
Being one of my first experiences with Python I didn't use Exceptions to signal error conditions, sorry.
'''
import W
import Qd
from ExtPixMapWrapper import *
from Numeric import *
import Image
import macfs
class ImageMacWin(W.Window):
def __init__(self,size=(300,300),title="ImageMacWin"):
self.pm=ExtPixMapWrapper()
self.empty=1
self.size=size
W.Window.__init__(self,size,title)
def Show(self,image,resize=0):
#print "format: ", image.format," size: ",image.size," mode: ",image.mode
#print "string len :",len(image.tostring())
self.pm.fromImage(image)
self.empty=0
if resize:
self.size=(image.size[0]*resize,image.size[1]*resize)
W.Window.do_resize(self,self.size[0],self.size[1],self.wid)
self.do_drawing()
def do_drawing(self):
#print "do_drawing"
self.SetPort()
Qd.RGBForeColor( (0,0,0) )
Qd.RGBBackColor((65535, 65535, 65535))
Qd.EraseRect((0,0,self.size[0],self.size[1]))
if not self.empty:
#print "should blit"
self.pm.blit(0,0,self.size[0],self.size[1])
def do_update(self,macoswindowid,event):
#print "update"
self.do_drawing()
class NumericMacWin(W.Window):
def __init__(self,size=(300,300),title="ImageMacWin"):
self.pm=ExtPixMapWrapper()
self.empty=1
self.size=size
W.Window.__init__(self,size,title)
def Show(self,num,resize=0):
#print "shape: ", num.shape
#print "string len :",len(num.tostring())
self.pm.fromNumeric(num)
self.empty=0
if resize:
self.size=(num.shape[1]*resize,num.shape[0]*resize)
W.Window.do_resize(self,self.size[0],self.size[1],self.wid)
self.do_drawing()
def do_drawing(self):
#print "do_drawing"
self.SetPort()
Qd.RGBForeColor( (0,0,0) )
Qd.RGBBackColor((65535, 65535, 65535))
Qd.EraseRect((0,0,self.size[0],self.size[1]))
if not self.empty:
#print "should blit"
self.pm.blit(0,0,self.size[0],self.size[1])
def do_update(self,macoswindowid,event):
#print "update"
self.do_drawing()
'''
Some utilities: convert an Image to a NumPy array and viceversa.
The Image2Numeric function doesn't make any color space conversion.
The Numeric2Image function returns an L or RGB or RGBA images depending on the shape of
the array:
(x,y) -> 'L'
(x,y,1) -> 'L'
(x,y,3) -> 'RGB'
(x,y,4) -> 'RGBA'
'''
def Image2Numeric(im):
tmp=fromstring(im.tostring(),UnsignedInt8)
if (im.mode=='RGB')|(im.mode=='YCbCr'):
bands=3
if (im.mode=='RGBA')|(im.mode=='CMYK'):
bands=4
if (im.mode=='L'):
bands=1
tmp.shape=(im.size[0],im.size[1],bands)
return transpose(tmp,(1,0,2))
def Numeric2Image(num):
#sometimes a monoband image's shape can be (x,y,1), other times just (x,y). Here w deal with both
if len(num.shape)==3:
bands=num.shape[2]
if bands==1:
mode='L'
elif bands==3:
mode='RGB'
else:
mode='RGBA'
return Image.fromstring(mode,(num.shape[1],num.shape[0]),transpose(num,(1,0,2)).astype(UnsignedInt8).tostring())
else:
return Image.fromstring('L',(num.shape[1],num.shape[0]),transpose(num).astype(UnsignedInt8).tostring())
def showImage(im,title="ImageWin",zoomFactor=1):
imw=ImageMacWin((300,200),title)
imw.open()
try:
imw.Show(im,zoomFactor )
except MemoryError,e:
imw.close()
print "ImageMac.showImage: Insufficient Memory"
def showNumeric(num,title="NumericWin",zoomFactor=1):
#im=Numeric2Image(num)
numw=NumericMacWin((300,200),title)
numw.open()
try:
numw.Show(num,zoomFactor )
except MemoryError:
numw.close()
print "ImageMac.showNumeric Insufficient Memory"
'''
GimmeImage pops up a file dialog and asks for an image file.
it returns a PIL image.
Optional argument: a string to be displayed by the dialog.
'''
def GimmeImage(prompt="Image File:"):
import macfs
fsspec, ok = macfs.PromptGetFile(prompt)
if ok:
path = fsspec.as_pathname()
return Image.open(path)
return None
'''
This is just some experimental stuff:
Filter3x3 a convolution filter (too slow use signal tools instead)
diffBWImage subtracts 2 images contained in NumPy arrays
averageN it computes the average of a list incrementally
BWImage converts an RGB or RGBA image (in a NumPy array) to BW
SplitBands splits the bands of an Image (inside a NumPy)
NumHisto and PlotHisto are some experiments to plot an intesity histogram
'''
def Filter3x3(mul,fi,num):
(a,b,c,d,e,f,g,h,i)=fi
print fi
num.shape=(num.shape[0],num.shape[1])
res=zeros(num.shape)
for x in range(1,num.shape[0]-1):
for y in range(1,num.shape[1]-1):
xb=x-1
xa=x+1
yb=y-1
ya=y+1
res[x,y]=int((a*num[xb,yb]+b*num[x,yb]+c*num[xa,yb]+d*num[xb,y]+e*num[x,y]+f*num[xa,y]+g*num[xb,ya]+h*num[x,ya]+i*num[xa,ya])/mul)
return res
def diffBWImage(num1,num2):
return 127+(num1-num2)/2
def averageN(N,avrg,new):
return ((N-1)*avrg+new)/N
def BWImage(num):
if num.shape[2]==3:
bw=array(((0.3086,0.6094,0.0820)))
else:
bw=array(((0.3086,0.6094,0.0820,0)))
res=innerproduct(num,bw)
res.shape=(res.shape[0],res.shape[1])
return res
def SplitBands(num):
x=num.shape[0]
y=num.shape[1]
if num.shape[2]==3:
return (reshape(num[:,:,0],(x,y)),reshape(num[:,:,1],(x,y)),reshape(num[:,:,2],(x,y)))
else:
return (reshape(num[:,:,0],(x,y)),reshape(num[:,:,1],(x,y)),reshape(num[:,:,2],(x,y)),reshape(num[:,:,3],(x,y)))
def NumHisto(datas):
#print "type(datas) ",type(datas)
a=ravel(datas)
n=searchsorted(sort(a),arange(0,256))
n=concatenate([n,[len(a)]])
return n[1:]-n[:-1]
def PlotHisto(datas,ratio=1):
from graphite import *
from MLab import max
h=NumHisto(datas)
#print "histo: ",h
#print "histo.shape: ",h.shape
maxval=max(h)
#print "maxval ",maxval
h.shape=(256,1)
x=arange(0,256)
x.shape=(256,1)
datah=concatenate([x,h],1)
print "data: "
print datah
g=Graph()
g.datasets.append(Dataset(datah))
f0=PointPlot()
f0.lineStyle = LineStyle(width=2, color=red, kind=SOLID)
g.formats = [f0]
g.axes[X].range = [0,255]
g.axes[X].tickMarks[0].spacing = 10
#g.axes[X].tickMarks[0].labels = "%d"
g.axes[Y].range = [0,maxval/ratio]
g.bottom = 370
g.top =10
g.left=10
g.right=590
genOutput(g,'QD',size=(600,400))
def test():
import MacOS
import Image
import ImageFilter
import Numeric
fsspec, ok = macfs.PromptGetFile("Image File:")
if ok:
path = fsspec.as_pathname()
im=Image.open(path)
#im2=im.filter(ImageFilter.SMOOTH)
showImage(im,"normal")
num=Image2Numeric(im)
#num=Numeric.transpose(num,(1,0,2))
showNumeric(num,"Numeric")
print "num.shape ",num.shape
showImage(Numeric2Image(num),"difficile")
#showImage(im.filter(ImageFilter.SMOOTH),"smooth")
#showImage(im.filter(ImageFilter.FIND_EDGES).filter(ImageFilter.SHARPEN),"detail")
print "here"
else:
print "did not open file"
if __name__ == '__main__':
test()

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Mac/Contrib/ImageHelpers/MovieUtils.py Normal file
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import Qt
import QuickTime
import macfs
import Qd
from QuickDraw import srcCopy
from ExtPixMapWrapper import ExtPixMapWrapper
from Qdoffs import *
import ImageMac
import W
def GetFrames(m):
frameCount=0
theTime=0
type=QuickTime.VideoMediaType
#type='MPEG'
flags=QuickTime.nextTimeMediaSample
flags=flags+QuickTime.nextTimeEdgeOK
while theTime>=0:
(theTime,duration)=m.GetMovieNextInterestingTime(flags,1,type,theTime,0)
#print "theTime ",theTime," duration ",duration
frameCount=frameCount+1
flags = QuickTime.nextTimeMediaSample
return frameCount-1
def GetMovieFromOpenFile():
fss, ok = macfs.StandardGetFile(QuickTime.MovieFileType)
mov = None
if ok:
movieResRef = Qt.OpenMovieFile(fss, 1)
mov, d1, d2 = Qt.NewMovieFromFile(movieResRef, 0, QuickTime.newMovieActive)
return mov
class ExtMovie:
def __init__(self,mov):
self.frames=0
self.frameArray=[]
self.movie=mov
self._countFrames()
r=self.movie.GetMovieBox()
self.myRect=(0,0,r[2]-r[0],r[3]-r[1])
self.movie.SetMovieBox(self.myRect)
self.pm=ExtPixMapWrapper()
self.pm.left=0
self.pm.top=0
self.pm.right=r[2]-r[0]
self.pm.bottom=r[3]-r[1]
self.gw=NewGWorld(32,self.myRect,None,None,0)
self.movie.SetMovieGWorld(self.gw.as_GrafPtr(), self.gw.GetGWorldDevice())
self.GotoFrame(0)
def _countFrames(self):
#deve contare il numero di frame, creare un array con i tempi per ogni frame
theTime=0
#type=QuickTime.VIDEO_TYPE
type=QuickTime.VideoMediaType
flags=QuickTime.nextTimeMediaSample+QuickTime.nextTimeEdgeOK
while theTime>=0:
(theTime,duration)=self.movie.GetMovieNextInterestingTime(flags,1,type,theTime,0)
self.frameArray.append((theTime,duration))
flags = QuickTime.nextTimeMediaSample
self.frames=self.frames+1
def GotoFrame(self,n):
if n<=self.frames:
self.curFrame=n
(port,device)=GetGWorld()
SetGWorld(self.gw.as_GrafPtr(),None)
(self.now,self.duration)=self.frameArray[n]
self.movie.SetMovieTimeValue(self.now)
pixmap=self.gw.GetGWorldPixMap()
if not LockPixels(pixmap):
print "not locked"
else:
#Qd.EraseRect(self.myRect)
#this draws the frame inside the current gworld
self.movie.MoviesTask(0)
#this puts it in the buffer pixmap
self.pm.grab(0,0,self.myRect[2],self.myRect[3])
UnlockPixels(pixmap)
#self.im=self.pm.toImage()
SetGWorld(port,device)
def NextFrame(self):
self.curFrame=self.curFrame+1
if self.curFrame>self.frames:
self.curFrame=0
self.GotoFrame(self.curFrame)
def isLastFrame():
return self.curFrame==self.frames
def GetImage(self):
return self.pm.toImage()
def GetImageN(self,n):
self.GotoFrame(n)
return self.pm.toImage()
def GetNumeric(self):
return self.pm.toNumeric()
def GetNumericN(self,n):
self.GotoFrame(n)
return self.pm.toNumeric()
def Blit(self,destRect):
Qd.RGBForeColor( (0,0,0) )
Qd.RGBBackColor((65535, 65535, 65535))
#Qd.MoveTo(10,10)
#Qd.LineTo(200,150)
Qd.CopyBits(self.gw.portBits,Qd.GetPort().portBits,self.myRect,destRect,srcCopy,None)
class MovieWin(W.Window):
def __init__(self,eMovie,title="MovieWin"):
self.ExtMovie=eMovie
def test():
import ImageFilter
from MLab import max
from MLab import min
from Numeric import *
Qt.EnterMovies()
m=GetMovieFromOpenFile()
em=ExtMovie(m)
print "Total frames:",em.frames," Current frame:",em.curFrame
#ImageMac.showImage(em.GetImage(),"frame 0",1)
#em.GotoFrame(500)
#ImageMac.showImage(em.GetImage().filter(ImageFilter.SMOOTH),"frame 500",2)
#ImageMac.showImage(em.GetImageN(1000),"frame 1000",2)
#r=array(((1,0,0,0),(0,0,0,0),(0,0,0,0),(0,0,0,0)))
#g=array(((0,0,0,0),(0,1,0,0),(0,0,0,0),(0,0,0,0)))
#b=array(((0,0,0,0),(0,0,0,0),(0,0,1,0),(0,0,0,0)))
#bw=array(((0.3086,0.6094,0.0820,0)))
#r2=array(((1,0,0,0)))
#ImageMac.showNumeric(em.GetNumericN(0),"frame 0",1)
#print em.GetNumericN(500).shape
#print "original (1,1)",em.GetNumericN(0)[100,100]
#print "product shape ",innerproduct(em.GetNumericN(0),r).shape
#print "product (1,1) ",innerproduct(em.GetNumericN(0),r)[100,100]
#ImageMac.showNumeric(ImageMac.BWImage(em.GetNumericN(50)))
#ImageMac.showNumeric(innerproduct(em.GetNumericN(500),r),"frame 500r",2)
#ImageMac.showNumeric(innerproduct(em.GetNumericN(500),g),"frame 500g",2)
#ImageMac.showNumeric(innerproduct(em.GetNumericN(500),b),"frame 500b",2)
#ImageMac.showNumeric(innerproduct(em.GetNumericN(500),r2),"frame 500r2",2)
#ImageMac.showNumeric(innerproduct(em.GetNumericN(10),bw),"frame 0bw",1)
#ImageMac.showNumeric(innerproduct(em.GetNumericN(400),bw),"frame 10bw",1)
#colordif=(em.GetNumericN(100)-em.GetNumericN(10))+(255,255,255,255)
#colordif=colordif/2
#ImageMac.showNumeric(colordif,"colordif",1)
#ImageMac.showNumeric(ImageMac.BWImage(colordif),"bwcolordif",1)
ilut=arange(0,256)
#ilut[118]=255
#ilut[119]=255
#ilut[120]=255
ilut[121]=255
ilut[122]=255
ilut[123]=255
ilut[124]=255
ilut[125]=255
ilut[126]=255
ilut[127]=255
ilut[128]=255
ilut[129]=255
#ilut[130]=255
#ilut[131]=255
#ilut[132]=255
mlut=ones(256)
mlut[118]=0
mlut[119]=0
mlut[120]=0
mlut[121]=0
mlut[122]=0
mlut[123]=0
mlut[124]=0
mlut[125]=0
mlut[126]=0
mlut[127]=0
mlut[128]=0
mlut[129]=0
mlut[130]=0
mlut[131]=0
mlut[132]=0
ImageMac.showImage(em.GetImageN(100),"provaImg",2)
ImageMac.showNumeric(em.GetNumericN(100),"provaNum",2)
ImageMac.showImage(em.GetImageN(100).filter(ImageFilter.SMOOTH),"frame 500",2)
#image=ImageMac.BWImage(em.GetNumericN(100))
#ImageMac.showNumeric(image)
#difimage=abs(image-ImageMac.BWImage(em.GetNumericN(10)))
#ImageMac.PlotHisto(difimage,32)
#ImageMac.showNumeric(difimage)
#difimage=127+(image-ImageMac.BWImage(em.GetNumericN(10)))/2
#ImageMac.PlotHisto(difimage,32)
#ImageMac.showNumeric(difimage)
#fimage=ImageMac.Filter3x3(16.0,(1,1,1,1,8,1,1,1,1),difimage)
#ImageMac.showNumeric(fimage)
#difimage2=choose(fimage.astype(UnsignedInt8),ilut)
#ImageMac.showNumeric(difimage2)
#(r,g,b,a)=ImageMac.SplitBands(em.GetNumericN(10))
#ImageMac.showNumeric(r,"r")
#ImageMac.showNumeric(g,"g")
#ImageMac.showNumeric(b,"b")
#ImageMac.showNumeric(a,"a")
#bwdif=abs(((innerproduct(em.GetNumericN(400),bw)-innerproduct(em.GetNumericN(10),bw))+255)/2)
#ImageMac.showNumeric(bwdif,"frame diff/bw",1)
#ImageMac.PlotHisto(bwdif)
#ImageMac.showNumeric(choose(bwdif.astype(UnsignedInt8),ilut),"frame diff/bw",1)
#ImageMac.PlotHisto(choose(bwdif.astype(UnsignedInt8),ilut))
#bwimage=ImageMac.BWImage(em.GetNumericN(100))
#ImageMac.showNumeric((ImageMac.BWImage(em.GetNumericN(90))+ImageMac.BWImage(em.GetNumericN(110))+ImageMac.BWImage(em.GetNumericN(130))+ImageMac.BWImage(em.GetNumericN(150))+ImageMac.BWImage(em.GetNumericN(170)))/5)
#bwdif=abs(((bwimage-ImageMac.BWImage(em.GetNumericN(10)))+255)/2)
#ImageMac.showNumeric(bwimage,"original frame",1)
#ImageMac.showNumeric(bwdif,"frame diff/bw",1)
#ImageMac.PlotHisto(bwdif)
#ImageMac.showNumeric(choose(bwdif.astype(UnsignedInt8),ilut),"frame diff/bw",1)
#mmask=choose(bwdif.astype(UnsignedInt8),mlut)
#ImageMac.showNumeric(255-255*mmask,"frame diff/bw",1)
#mmask.shape=bwimage.shape
#ImageMac.showNumeric(mmask*bwimage,"frame diff/bw",1)
#ImageMac.showNumeric((innerproduct(em.GetNumericN(300),bw)-innerproduct(em.GetNumericN(0),bw)),"frame diff/bw",1)
#ImageMac.showNumeric((innerproduct(em.GetNumericN(400)-em.GetNumericN(10),bw)),"frame diff2/bw",1)
#cdif=em.GetNumericN(400)-em.GetNumericN(10)
#ImageMac.showNumeric(,"frame diff2/bw",1)
#ImageMac.showNumeric(innerproduct(cdif,r),"frame 500r",1)
#ImageMac.showNumeric(innerproduct(cdif,g),"frame 500g",1)
#ImageMac.showNumeric(innerproduct(cdif,b),"frame 500b",1)
def test2():
Qt.EnterMovies()
m=GetMovieFromOpenFile()
if m==None:
print "no movie opened"
else:
em=ExtMovie(m)
print "Total frames: ",em.frames," Current frame:",em.curFrame
ImageMac.showImage(em.GetImage(),"frame 0",1)
if __name__ == '__main__':
test2()

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Mac/Contrib/ImageHelpers/ReadMe Normal file
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ExtPixMapWrapper.py
ImageMac.py
Hello these are the classes to deal with Images and NumPy arrays I told
you about. I left everything unchanged, it is the same copy I use with
comments added. However I think that in ImageMac the only part worth including
in MacPython (if you think it is worth), is the first half, until GimmeImage.
After that it is almost rubbish I used in my CV experiments.
MovieUtils.py
This is another class I use. IT contais a lot of my experiments (unuseful), but
the first function GetFrames(). it is almost the translation of a QT sample.
GetMovieFromOpenFile() it is the usual shortcut to get a movie. (no error tracking
done).
The class ExtMovie requires a movie in the constructor and then
provides a method to take every single frame and convert it to an
Image or a NUmPy array.
If you think that it can be included in the qt examples I'll write comments and
polish it a bit. (exceptions handling)
Riccardo Trocca
P.S. Everything works with 2.0b1