IS there a Fast way to Make an image filter in PyS60?

[ronnie.basak96]

Hello everyone, I have some coding experience in Python but I'm new at PyS60.

Now, I'm on a project as they are a Good way to learn new things dynamically.

My target is to make an invert color filter,

What I've done is

from graphics import  *
import e32

s=raw_input("Enter Image Location \n=")
im=Image.open(s)
img=Image.new(im.size, "L")  #my need is to make it B&W then invert
img.blit(im)

img.save("E:\\F.jpg")
print "F.jpg has been generated"

def invertclr(img2):
    width, height= img2.size
    img3=Image.new(img2.size, "L")
    for y in range(height):
       for x in range(width):
         c=img2.getpixel((x,y))[0]
         r,g,b=c
        img3.point((x,y), (255-r, 255-r, 255-r))
        #e32.ao_yield()
 img3.save("E:\\F2.jpg")

invertclr(img)
print "E:\\F2.png has been generated"

The colors are Successfully getting inverted,
But it takes Long times to do it
Inventing An Image of 477x535 needed 41 seconds

But I have an feeling that it can be done in 1 or 2 seconds,

Actually, when I Make an B&W image an Invert its colors, and if this image is used as a mask. It creates a pretty good image filter.

Any kind of help will be appreciated.

EDIT: removing the e32.ao_yield inside the loop (now commented) reduced the time by 11 seconds, but its still not quite enough.

will it run fast inside a class or a compiled script??

[wizard_hu_]

There is no JIT in PyS60 as I understand, and compiled scripts affect only the loading time. You can experiment with creating C++ extensions: http://www.developer.nokia.com/Commu...Easy_Approach)

[ronnie.basak96]

There is no JIT in PyS60 as I understand, and compiled scripts affect only the loading time. You can experiment with creating C++ extensions: http://www.developer.nokia.com/Commu...Easy_Approach)

Thank you for responce.
I am not that great in C++. So, I can't and also, That weakness in Symbian C++ led that I don't has the Carbide.c++ .

So, I am unable to port the Ncv to PyS60 2.
And Also, If Anyone Ports (Just Recompiling the source with PyS60 2 SDK)
I will be thankful as In 50-60Kbps of speed I can't download 286MB.

[cyke64]

Thank you for responce.
I am not that great in C++. So, I can't and also, That weakness in Symbian C++ led that I don't has the Carbide.c++ .

So, I am unable to port the Ncv to PyS60 2.
And Also, If Anyone Ports (Just Recompiling the source with PyS60 2 SDK)
I will be thankful as In 50-60Kbps of speed I can't download 286MB.

Good news for you :-)
I found Ncv ported to PyS60 2.0.0 except pycamera module !

Download it and say thanks to Marcello Bareido Almeda.

https://projects.forum.nokia.com/pys..._PyS60_2_0.zip

BR
Cyke64