[cyke64]

Hello everybody ,

You have surely missed it
Nokia has finally released the NCVLib for PyS60

features :
- Vector operations : transpose , product
- Matrix operations
- image operations : Rotation , resize, warp , theshold , edge detection , corner detection
- RGB to YUV,HSV pixel conversion
and many more

But also you a very useful and more complete library for camera than official (py_camera) and pyMELIB (Motion Estimation LIBrary)

More info,doc and examples on http://research.nokia.com/research/p.../download.html

LAST MINUTE !

Updated on the 07-01-08 !





I found a workaround for the annoying -46 error
I have changed caps with excellent ensymble tool

ncvlib self-signed (5 caps )
pyncvlib self-signed

Happy pythoning
Cyke64

[shubhendra]

Cool this Library will really help in OCR projects.
But how to download this file? No click button or auto download thing here?

[croozeus]

Originally Posted by shubhendra

Cool this Library will really help in OCR projects.
But how to download this file? No click button or auto download thing here?

Originally Posted by cyke64

Tommorrow I try to recompile all this stuff

Cool !

Cyke : Did you have success in running the scripts?

Best Regards,
Croozeus

[cyke64]

Originally Posted by shubhendra

Cool this Library will really help in OCR projects.
But how to download this file? No click button or auto download thing here?

There's no click button because each zip file in the page can be downloaded directly by clicking on it

http://research.nokia.com/files/NcvLib-1.0.zip
http://research.nokia.com/files/PyNcvLib-1.0.zip

I have listed the two main links for you

BR
Cyke64

[cyke64]

Originally Posted by croozeus

Cool !

Cyke : Did you have success in running the scripts?

Best Regards,
Croozeus

No , error -46

But scripts with pycamera are working perfectly

import e32

import pycamera
import sysinfo

print "Constructing camera object 0"
cam = pycamera.Camera(0)

print "Reserving camera"
cam.Reserve()

print "Powering on"
cam.PowerOn()

print "Preparing to capture"
cam.SetResolution((640, 480))
cam.SetFormat(pycamera.EFormatExif)
cam.PrepareForCapture()

lock = e32.Ao_lock()

photo = None

def photo_callback(arg):
    global photo
    print "photo received!"
    print type(arg)
    photo = arg
    lock.signal()
    
cam.SetPhotoCallback(photo_callback)

def viewfinder_callback(arg):
    print "viewfinder frame!"

cam.SetViewfinderCallback(viewfinder_callback)

print "Starting viewfinder"
cam.StartViewfinder()

e32.ao_sleep(1)

K = 1

import appuifw

for i in range(K):
    print "Taking photo", i
    print "Free memory: ", sysinfo.free_ram()
    cam.TakePhoto()
    lock.wait()
    canvas = appuifw.Canvas(event_callback = lambda ev: None,
                            redraw_callback = lambda ev: None)
    oldBody = appuifw.app.body
    appuifw.app.body = canvas
    im = pycamera.DecodeJpeg(photo)
    canvas.blit(im)
    

e32.ao_sleep(1)

appuifw.app.body = oldBody

print "Stopping viewfinder"
cam.StopViewfinder()

print "Powering off"
cam.PowerOff()

print "Releasing"
cam.Release()

print "Deleting camera object"
del cam

BR
Cyke64

[cyke64]

Originally Posted by croozeus

Cool !

Cyke : Did you have success in running the scripts?

Best Regards,
Croozeus

Now YES YES
The problem was only 3 caps instead of 5 in ncvlib and pyncvlib
So I have altered caps in sis files thanks to excellent ensymble tool with 5 caps and now examples are running !

New temporary links are in the top post of this thread !

BR
Cyke64

[cyke64]

I sent an e-mail to xingen yiong (Nokia research Palo Alto) author of PyNCVlib.

Hello ,

I'm happy that you have released the pyncvlib library for PyS60 :-)
But I meet (and many other people in Forum Nokia) many problems !
I change caps(5 instead of 3) in pyncvlib and ncvlib to avoid -46 error but many errors remain ...

1) pyncvlib , pymelib have not enough capabilities : we need self-signed caps (5) : LocalServices+NetworkServices+ReadUserData+UserEnvironment+WriteUserData
but you give only 3 : ReadUserData+UserEnvironment+WriteUserData
2) Why do you place _pymelib.dll in pymelib.sis file ? You call in pymelib.py the inexisting _pymelib.pyd !!!
3) melib.dll has no capabilities ! why ?
4) demo_melib.py show following error after launching :
PyMelib = PyNcvLib.PyCMelib();
attributeError:'module' object has no attribute 'PyCMelib'

import e32

if e32.s60_version_info>=(3,0):
import imp
_PyNcvLib=imp.load_dynamic('_PyMeLib', 'c:\\sys\\bin\\_PyMeLib.pyd')

else:
import _PyMeLib

Is it possible to release also the source code for pycamera ? It's a very interesting module which extend possibilities of standard camera module !

Thanks in advance
Cyke64 (Forum Nokia Champion)

I hope that bugs will be fixed soon

BR
Cyke64

[cyke64]

Updated today !

download them again

BR
Cyke64

[croozeus]

Thanks to Cyke also for following up with the errors to the author !

Best Regards,
Croozeus

[neil.young]

This NCVLIB stuff sucks as almost all PyS60 things Download/Installation OK, but KErrorPermissionDenied while running one of their glorious samples. I don't know what they are doing there, but they don't do it well But probably it's me again...

[croozeus]

Originally Posted by neil.young

This NCVLIB stuff sucks as almost all PyS60 things Download/Installation OK, but KErrorPermissionDenied while running one of their glorious samples. I don't know what they are doing there, but they don't do it well But probably it's me again...

Signing issue? Try signing with all capabilites before installing.

[neil.young]

http://research.nokia.com/research/p.../download.html

I found an (obvioulsly) signed SIS in the SIS folder of PyNCVLib-1.0.zip and tried this. -> -46. After that I tried to opensign the unsigned SIS from there and got an error from symbiansigned: "The UID does not belong the the bunch of UIDs available for your IMEI" or so... bla bla...

PyS60 is exactly behaving like Delphi: Not even ONE simple installation of someone's other packages passes through w/o problems...

[croozeus]

Originally Posted by neil.young

http://research.nokia.com/research/p.../download.html

I found an (obvioulsly) signed SIS in the SIS folder of PyNCVLib-1.0.zip and tried this. -> -46. After that I tried to opensign the unsigned SIS from there and got an error from symbiansigned: "The UID does not belong the the bunch of UIDs available for your IMEI" or so... bla bla...

Sign with the devcert!

Originally Posted by neil.young

PyS60 is exactly behaving like Delphi: Not even ONE simple installation of someone's other packages passes through w/o problems...

Well, extension do behave in a peculiar way but its not different for all! Infact, if one gets to understand the deployment/installation procedure once - it is not so difficult next time.

However, I suppose its only getting simpler with the newer versions.

//Croozeus

[neil.young]

Don't have working devcert anymore. Too bad, but thanks for your help. Will stop here.

[treta34]

Hi,

I am quite new to PyS60 and to pyncvlib and I am quite confuse... My questions relate to installation of pyncvlib on my mobile and sdk.

I cannot install the pyncvlib in my phone because apparently the certificate is outdated... I still do not understand what are these certificates... Who creates them? Can I create a new one with the info provided in the rest of the package? Most of all, why do I need a certificate and is it possible to install the package without a certificate?

I also tried to use the self signed version provided by cyke64 in a previous post and everything went smoothly, but when I tried to run the python_examples files on my phone there was an ImportError complaining that there was no PyNcvLib module... I transferred the examples directly to the python folder in my phone memory card. This is the correct procedure right?.

Furthermore, I still do not understand how should I install the library in the emulator... What should I do with the cpp files? This part I really do not understand

I am using 3rd Edition FP1 SDK and my phone is a nokia 6210 navigator running the equivalent os version.
I am trying to transfer some code I developed in python using PIL and scipy (I still do not want to thing about this part) to my mobile phone.

I would really appreciate your help!