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  • Images to video - converting to IplImage makes video blue

    - by user891908
    I want to create a video from images using opencv. The strange problem is that if i will write image (bmp) to disk and then load (cv.LoadImage) it it renders fine, but when i try to load image from StringIO and convert it to IplImage, it turns video to blue. Heres the code: import StringIO output = StringIO.StringIO() FOREGROUND = (0, 0, 0) TEXT = 'MY TEXT' font_path = 'arial.ttf' font = ImageFont.truetype(font_path, 18, encoding='unic') text = TEXT.decode('utf-8') (width, height) = font.getsize(text) # Create with background with place for text w,h=(600,600) contentimage=Image.open('0.jpg') background=Image.open('background.bmp') x, y = contentimage.size # put content onto background background.paste(contentimage,(((w-x)/2),0)) draw = ImageDraw.Draw(background) draw.text((0,0), text, font=font, fill=FOREGROUND) pi = background pi.save(output, "bmp") #pi.show() #shows image in full color output.seek(0) pi= Image.open(output) print pi, pi.format, "%dx%d" % pi.size, pi.mode cv_im = cv.CreateImageHeader(pi.size, cv.IPL_DEPTH_8U, 3) cv.SetData(cv_im, pi.tostring()) print pi.size, cv.GetSize(cv_im) w = cv.CreateVideoWriter("2.avi", cv.CV_FOURCC('M','J','P','G'), 1,(cv.GetSize(cv_im)[0],cv.GetSize(cv_im)[1]), is_color=1) for i in range(1,5): cv.WriteFrame(w, cv_im) del w

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  • numpy array C api

    - by wiso
    I have a C++ function returning a std::vector and I want to use it in python, so I'm using the C numpy api: static PyObject * py_integrate(PyObject *self, PyObject *args){ ... std::vector<double> integral; cpp_function(integral); // this change integral npy_intp size = {integral.size()}; PyObject *out = PyArray_SimpleNewFromData(1, &size, NPY_DOUBLE, &(integral[0])); return out; } when I call it from python, if I do import matplotlib.pyplot as plt a = py_integrate(parameters) print a fig = plt.figure() ax = fig.add_subplot(111) ax.plot(a) print a the first print is ok, the values are correct, but when I plot a they are not, and in particular in the second print I see very strange values like 1E-308 1E-308 ... or 0 0 0 ... as an unitialized memory. I don't understand why the first print is ok.

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  • python: multiline regular expression

    - by facha
    Hi, everyone I have a piece of text and I've got to parse usernames and hashes out of it. Right now I'm doing it with two regular expressions. Could I do it with just one multiline regular expression? #!/usr/bin/env python import re test_str = """ Hello, UserName. Please read this looooooooooooooooong text. hash Now, write down this hash: fdaf9399jef9qw0j. Then keep reading this loooooooooong text. Hello, UserName2. Please read this looooooooooooooooong text. hash Now, write down this hash: gtwnhton340gjr2g. Then keep reading this loooooooooong text. """ logins = re.findall('Hello, (?P<login>.+).',test_str) hashes = re.findall('hash: (?P<hash>.+).',test_str)

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  • Python problem with resize animate GIF

    - by gigimon
    Hello! I'm want to resize animated GIF with save animate. I'm try use PIL and PythonMagickWand (ImageMagick) and with some GIF's get bad frame. When I'm use PIL, it mar frame in read frame. For test, I'm use this code: from PIL import Image im = Image.open('d:/box_opens_closes.gif') im.seek(im.tell()+1) im.seek(im.tell()+1) im.seek(im.tell()+1) im.show() When I'm use MagickWand with this code: wand = NewMagickWand() MagickReadImage(wand, 'd:/Box_opens_closes.gif') MagickSetLastIterator(wand) length = MagickGetIteratorIndex(wand) MagickSetFirstIterator(wand) for i in range(0, length+1): MagickSetIteratorIndex(wand,i) MagickScaleImage(wand, 87, 58) MagickWriteImages(wand, 'path', 1) My GIF where I'm get bad frame this: test gif In GIF editor software, all freme is ok. Where problem? Thx

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  • How can i use 'log' inside a src/groovy/ class

    - by firnnauriel
    I'm encountering this error: groovy.lang.MissingPropertyException: No such property: log for class: org.utils.MyClass Here's the content of the class: package org.utils class MyClass { int organizationCount = 0 public int getOrganizationCount(){ log.debug "There are ${organizationCount} organization(s) found." return organizationCount } } Do i need to add an import statement? What do i need to add? Note that the class is located in src/groovy/org/utils. I know that the 'log' variable is accessible in controllers, services, etc. Not sure in 'src' classes. Thanks.

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  • Comparison between pointer and integer (cocoa)

    - by Cal S
    Hi, I'm just learning cocoa (coming from C#) but I'm getting a strange error for something that seems really simple... (charsSinceLastUpdate=36) #import "CSMainController.h" @implementation CSMainController //global vars int *charsSinceLastUpdate = 0; NSString *myString = @"Hello world"; // - (void)applicationDidFinishLaunching:(NSNotification *)aNotification { ... } //other functions - (void)textDidChange:(NSNotification *)aNotification { NSLog(@"charsSinceLastUpdate=%i",charsSinceLastUpdate); if (charsSinceLastUpdate>=36) { // <- THIS line returns the error: Comparison between pointer and integer charsSinceLastUpdate=0; [statusText setStringValue:@"Will save now!"]; } else { charsSinceLastUpdate++; [statusText setStringValue:@"Not saving"]; } } //my functions - (void)showNetworkErrorAlert:(BOOL)showContinueWithoutSavingOption { ... } // @end Any help would be appreciated, thanks!

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  • Windows environment variables change when opening command line?

    - by Jakobud
    Sometimes when I change my environment variables in Windows, and then use software the depends on those variables, they are not properly updated. And good example is to change a variable, then open up Windows Command Line and echo the variable and see that it hasn't been changed, even though you properly changed it in the Environment Variables window. Another example I'm dealing with right now: I've been using Python 2.4.x for a while for a project, which uses the env var PYTHONPATH who's value has been: C:\Python24;C:\Python24\lib Today I installed Python 2.5.x for the project. I changed my PYTHONPATH to be: C:\Python25;C:\Python25\lib When I use Python 2.5 to run a script and do this: import sys print sys.path It prints: 'C:\\PYTHON24', 'C:\\PYTHON24\\lib' (and some other Python 2.5 related default installation paths) So clearly, the old PYTHONPATH environment variable changes aren't really sticking.... Does anyone know why this happens and how to fix it?

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  • Python+Windows+GStreamer = Impossible (for me)?

    - by james
    Hi :) essentially, my problem is, ater a long time searching, finding only this other question, i decided i was just going to ask my own... i am on windows 7 with python 2.6 and ossbuild GStreamer, but i am trying to get the python binding for it, and struggling. i have got gst-python from http://gstreamer.freedesktop.org/src/gst-python/ but as my eyes and research tell me, it does not work in the setup.py way, and the other question has a link to a site that he says has a binary avaiable, which no longer does, http://www.gstreamer-winbuild.ylatuya.es/doku.php?id=download and even the sdk is gone, and ossbuild dont seem to have anything useful either. so essentially, my question is, can anyone tell me a method, however convoluted, of getting my setup so if i write a script for (py)gst, with an import gst it will work? not the best of explanations... im tired k? xxx :)

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  • Running Python code from Java program, shoudl i be doing this?

    - by Space Rocker
    i have a scenario where i draw a network and set all it's paraments on swing based gui, after that i have to translate this network into a python based script which another framework reads and realize this network in the form of virtual machines. As an example have look here: from mininet.topo import Topo, Node class MyTopo( Topo ): def *__init__*( self, enable_all = True ): super( MyTopo, self ).__init__() Host = 1 Switch = 2 self.add_node( Switch, Node( is_switch=True ) ) self.add_node( Host, Node( is_switch=False ) ) self.add_edge( Host, Switch ) self.enable_all() topos = { 'mytopo': ( lambda: MyTopo() ) } It simply connects a host to a switch and realize this topology on mininet framework. Now for now in order to realize the drawn network on java GUI here is what i am doing: I simply take the information from GUI and creates a new python file like the one above using java code and then run this file in mininet, which works fine somehow. I want to know, is this the correct and robust way how i am doing this or should i be looking further into java-python bridge like scenarios to be more effective or so as to say more professional.

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  • Problem calling stored procedure with a fixed length binary parameter using Entity Framework

    - by Dave
    I have a problem calling stored procedures with a fixed length binary parameter using Entity Framework. The stored procedure ends up being called with 8000 bytes of data no matter what size byte array I use to call the function import. To give some example, this is the code I am using. byte[] cookie = new byte[32]; byte[] data = new byte[2]; entities.Insert("param1", "param2", cookie, data); The parameters are nvarchar(50), nvarchar(50), binary(32), varbinary(2000) When I run the code through SQL profiler, I get this result. exec [dbo].[Insert] @param1=N'param1',@param2=N'param2',@cookie=0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 [SNIP because of 16000 zeros] ,@data=0x0000 All parameters went through ok other than the binary(32) cookie. The varbinary(2000) seemed to work fine and the correct length was maintained. Is there a way to prevent the extra data being sent to SQL server? This seems like a big waste of network resource.

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  • [Tkinter/Python] Different line widths with canvas.create_line?

    - by Sam
    Does anyone have any idea why I get different line widths on the canvas in the following example? from Tkinter import * bigBoxSize = 150 class cFrame(Frame): def __init__(self, master, cwidth=450, cheight=450): Frame.__init__(self, master, relief=RAISED, height=550, width=600, bg = "grey") self.canvasWidth = cwidth self.canvasHeight = cheight self.canvas = Canvas(self, bg="white", width=cwidth, height=cheight, border =0) self.drawGridLines() self.canvas.pack(side=TOP, pady=20, padx=20) def drawGridLines(self, linewidth = 10): self.canvas.create_line(0, 0, self.canvasWidth, 0, width= linewidth ) self.canvas.create_line(0, 0, 0, self.canvasHeight, width= linewidth ) self.canvas.create_line(0, self.canvasHeight, self.canvasWidth + 2, self.canvasHeight, width= linewidth ) self.canvas.create_line(self.canvasWidth, self.canvasHeight, self.canvasWidth, 1, width= linewidth ) self.canvas.create_line(0, bigBoxSize, self.canvasWidth, bigBoxSize, width= linewidth ) self.canvas.create_line(0, bigBoxSize * 2, self.canvasWidth, bigBoxSize * 2, width= linewidth) root = Tk() C = cFrame(root) C.pack() root.mainloop() It's really frustrating me as I have no idea what's happening. If anyone can help me out then that'd be fantastic. Thanks!

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  • How can I create a simple message box in Python?

    - by Carson Myers
    I'm looking for the same effect as alert() in JavaScript. I wrote a simple web-based interpreter this afternoon using Twisted.web. You basically submit a block of Python code through a form, and the client comes and grabs it and executes it. I want to be able to make a simple popup message, without having to re-write a whole bunch of boilerplate wxPython or TkInter code every time (since the code gets submitted through a form and then disappears). I've tried tkMessageBox: import tkMessageBox tkMessageBox.showinfo(title="Greetings", message="Hello World!") but this opens another window in the background with a tk icon. I don't want this. I was looking for some simple wxPython code but it always required setting up a class and entering an app loop etc. Is there no simple, catch-free way of making a message box in Python?

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  • Non-managed by Spring web-application and jar file with Spring features

    - by EugeneP
    My idea is to create a .jar file that contains Services managed by Spring, that should be got by getBean() I want to put it to WEB-INF/lib of a Web-app Then in web-app Servlets I want to get use of the functionality of a Jar file. 1 Idea. Create classes that encapsulate invokation to Spring Context (getBean() etc) So then, I suppose there'll be no problem in using those in Servlets through jar import. Only thing, what kind of context I should use inside .jar to get beans so that it worked after packing into jar? ApplicationContext or what? 2 Idea. Is there another simple solution how to pack into jar and then use Services in a non-managed by Spring environment?

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  • Python IPC, popen too slow

    - by UnableToLoad
    i need to run a subprocess (./myProgram) form python script and get output, actually i do this: import subprocess proc = subprocess.Popen('./generate_out', shell=False, stdout=subprocess.PIPE, ) while proc.poll() is None: out = proc.stdout.readline() data = doStuff(out) print(data) but is slow, sometimes pass a lot of time between the output produced by ./generate_out and the print(data), knowing that my doStuff() function is very fast, i think there is some buffer slowing down my pipe... Notes: ./generate_out, generates potentially an unlimited number of lines of finite length each. It seems that when too few chars are put in the pipe between the two processes nothing happens, then when enough is produced i get a huge print (non the expected behaviour!) sometimes i wait many seconds (10-20 and more) between generate_out print and python print) what can i do? maybe communicate() is faster? anithing else? Thank you a lot!

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  • maven provided scope

    - by kamaci
    <dependency> <groupId>javax.servlet</groupId> <artifactId>servlet-api</artifactId> <version>2.5</version> <scope>provided</scope> </dependency> I use that dependency import at my project's pom.xml. My question is I declared 2.5 as version. However does it important to write a lower version? For example I mean that if my project uses 3.0 version and I write that 2.5 will be provided? (I mean that let's accept that 2.5 is fine and my project works well, If I don't change anything else and just change 2.5 to 2.0 does it cause to an error?)

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  • Two CVS projects into one SVN project

    - by komunca
    I have two CVS projects, which I maintain in Eclipse. I check out first project, and for second project I use "checkout in existing project" option, so I'm able to maintain two CVS projects into one Eclipse project. Doing this I'm able to Tag both projects with the same tag,etc. And know, time has come to start using SVN. I was able to create two separate CVS dump files, and when I used svnadmin to load then into SVN repository, I wasn't able to keep the structure I had in CVS! So, when i import both dump seperatly into SVN I get the following structure: ProjA - brancher tags trunk ProjB bracnches tags trunk In CVS I was able to have ProjB as a child folder of the ProjA trunk! Is there any way to implement this using SVN?

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  • Subversion commit failed on Mac OS X with error "no such table: rep_cache"

    - by arun
    I created a subversion repository, imported an empty structure, checked out the repo, added a file to the working copy and tried commiting the working copy with the following commands: svnadmin create mysvn svn import -m "initial empty structure" test/ file:///tmp/mysvn svn co file:///tmp/mysvn mywc svn ci -m "test" The commit failed with the following error: Transmitting file data .svn: Commit failed (details follow): svn: While preparing '/tmp/mywc' for commit svn: no such table: rep_cache I am running Mac OS X 10.6.3 and subversion 1.6.5. Did I miss any steps or Mac specific commands? Thanks for your help.

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  • How can I tell Phusion Passenger which python to use?

    - by Mike
    I'm using Phusion Passenger with a ruby app and I'd also like to set it up to work with an django appengine app I'm working on. Googling for "passenger_wsgi.py" I was able to get the following very simple non-django app working on passenger: passenger_wsgi.py: def application(environ, start_response): response_headers = [('Content-type','text/plain')] start_response('200 OK', response_headers) return ['Hello World!\n'] However, if I add the line import django.core.handlers.wsgi into the mix, I get 'An error occurred importing your passenger_wsgi.py'. By printing out the sys.path I've discovered that at least part of the reason is because Passenger is using the wrong python installation on my machine. How can I configure Passenger (on apache) to use /opt/local/bin/python2.5 instead of the system default python?

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  • stting environment variables in powershell by calling python script that prints $env:myVar=myvalue

    - by leeg
    I have some legacy python scripts that manage my shell environment for all the programs and plugins I am running on Linux (bash) and windows (cmd.exe). I want to port this to powershell. How do I set environment variables in powershell by calling python script that prints $env:myVar=myvalue and causes my environment variable to persist in the powershell. In Bash I can use a bash function to call my python script which prints export var=value to stdout and the function will set the environment variables in my shell. This will also work in windows cmd shell by calling a .bat file. I cannot figure out how to do this in powershell. I think it should be something like this: setvar.ps1: function SETVAR {c:\python26\python.exe varconfig.py } varconfig.py: import sys print >> sys.stdout, '$env:myVar=foo'

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  • Problem with sys.argv[1] when unittest module is in a script

    - by chrissygormley
    Hello, I have a script that does various things and access paramenters using sys.argv but when the script gets to the unittest part of the code it says there is no module for this. The script that I have is: class MyScript(): def __init__(self): self.value = sys.argv[1] def hello(self): print self.value def suite(self): modules_to_test = ('external_sanity_onvif', 'starttest') alltests = unittest.TestSuite() for module in map(__import__, modules_to_test): alltests.addTest(unittest.findTestCases(module)) return alltests if __name__ == '__main__': Run = MyScript() Run.hello() log_file = 'log_file.txt' test_file = open(log_file, "w") runner = unittest.TextTestRunner(test_file) unittest.main(defaultTest='Run.suite', testRunner=runner) Say I enter ./script.py Hello in the command line. The error I get is: AttributeError: 'module' object has no attribute 'Hello' If I remove the unittest module it works. Also if I remove the testrunner log and leave it at: unittest.main(defaultTest='Run.suite') This still doesn't work. Can anyone help. Thanks

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  • Django 404 pages not appearing?

    - by AP257
    I want to add a 404 page on my Django site. I've created a template, 404.html, and saved it in the root of my /templates directory. I've also made sure that the from django.conf.urls.defaults import * line is included at the top of urls.py. I've set DEBUG to False. (I've been following these instructions.) However, if I try to go to a page that I know doesn't exist - whether a made-up URL or a view specifically designed to do get_object_or_404 - the 404 page doesn't appear: I just get Chrome's standard 'Oops! This link appears to be broken' page. Oddly, I also have a 500.html template in the same place and that is appearing just fine if I generate a 500 error. What might the problem be?

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  • IUNavigationController loading more viewControllers

    - by Goods
    Not a Noob as yesterday, but still green. I have a UITabbarcontoller and a IUNavigationController they seem to work fine. I have a UITableviewController to which I loads my NSMutable array. The user clicks a cell and didSelectRowAtIndexPath xib is loaded onto the stack. I have a 'Learn More' button on the current xib. I've tried a few approaches to load a newer xib when the 'Learn More' button is pressed but have failed. Im thinking it has to do with the Navigation Controller? Do I need to import the navigationcontroller to every ViewControllerSubclass I make? Thanks.

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  • Validate an XML File Against Multiple Schema Definitions

    - by Jon
    I'm trying to validate an XML file against a number of different schemas (apologies for the contrived example): a.xsd b.xsd c.xsd c.xsd in particular imports b.xsd and b.xsd imports a.xsd, using: <xs:include schemaLocation="b.xsd"/> I'm trying to do this via Xerces in the following manner: XMLSchemaFactory xmlSchemaFactory = new XMLSchemaFactory(); Schema schema = xmlSchemaFactory.newSchema(new StreamSource[] { new StreamSource(this.getClass().getResourceAsStream("a.xsd"), "a.xsd"), new StreamSource(this.getClass().getResourceAsStream("b.xsd"), "b.xsd"), new StreamSource(this.getClass().getResourceAsStream("c.xsd"), "c.xsd")}); Validator validator = schema.newValidator(); validator.validate(new StreamSource(new StringReader(xmlContent))); but this is failing to import all three of the schemas correctly resulting in cannot resolve the name 'blah' to a(n) 'group' component. I've validated this successfully using Python, but having real problems with Java 6.0 and Xerces 2.8.1. Can anybody suggest what's going wrong here, or an easier approach to validate my XML documents?

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  • $(MSBuildStartupDirectory) in Visual Studio points to different places on different machines

    - by skolima
    In a large solution, I'm integrating Gendarme into Visual Studio 2008 compilation process. I am using GendarmeMsBuild task along with a .targets file to add a AfterBuild target to every project in the solution. I am looking for a way to import this file into .csproj files in a way that wouldn't require me to change the include path (the projects have different nesting levels). Apart from using NuGet SolutionDir variable, best way to solve this seemed to be to use $(MSBuildStartupDirectory). However, as it turns out, on some machines, using the same version of VS 2008 (as same updates installed, as far as I was able to check) this resolves to the solution directory, and on others to c:\Program Files (x86)\Microsoft Visual Studio 9.0\Common7\IDE. How can I either get this to always resolve to the solution folder or obtain the base folder in another consistent way?

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  • Creating a unique key based on file content in python

    - by Cawas
    I got many, many files to be uploaded to the server, and I just want a way to avoid duplicates. Thus, generating a unique and small key value from a big string seemed something that a checksum was intended to do, and hashing seemed like the evolution of that. So I was going to use hash md5 to do this. But then I read somewhere that "MD5 are not meant to be unique keys" and I thought that's really weird. What's the right way of doing this? edit: by the way, I took two sources to get to the following, which is how I'm currently doing it and it's working just fine, with Python 2.5: import hashlib def md5_from_file (fileName, block_size=2**14): md5 = hashlib.md5() f = open(fileName) while True: data = f.read(block_size) if not data: break md5.update(data) f.close() return md5.hexdigest()

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