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Questions tagged [simplecaptcha]

SimpleCaptcha is a Java library for generating CAPTCHA images and audio for the challenge/answer pairs.

SimpleCaptcha is a Java library for generating CAPTCHA images and audio for the challenge/answer pairs. SimpleCaptcha is intended to be easy to implement and use sensible defaults, while providing easily-accessible hooks for customization. Example implementations are provided in Java EE and Grails.

The project home page: http://simplecaptcha.sourceforge.net/

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Removing curved line from captcha

I am trying to read a captcha generated by SimpleCaptcha: I've managed to remove the gradient and color: import cv2 as cv import numpy as np import PyDIP as dip import pytesseract img = cv.imread('capt.jpg') img = cv.cvtColor(img,…
Braulio Soncco
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How to save simpleCaptcha wav file in java

I need to save the file to play Simplecaptcha voice file on IOS and succeeded in saving the file in a folder I want. But I tried to play the wav file in the folder(double click), It wasn't replayed. Please help me public static void saveAudio(final…
Sophia LEE
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Convert base64 to image and display on browser only

I know that this question has already been asked but there's not a single solution for my case. I am generating a Captcha using JavaScript of three letters and I am able to convert them to base64 string so as to able to convert it further to an…
Megha Verma
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SimpleCaptcha: how to make upper-case letters always larger than lower-case letters?

I use Java-based SimpleCaptcha for my web application. I notice that the the case of letters generated by SimpleCaptcha are hard to recognize in some cases. See the following two examples: In the above, it is difficult to know "c" is in lower-case…
curious1
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simplecaptcha-1.2.1.jar (Timeout issue)

We are using simplecaptcha-1.2.1.jar in our project. Captcha values expires very quickly but i cannot see specific time duration configured anywhere. what is the maximum time limit for simple captcha to expire? Is the time configurable ?
user2404539
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Displaying SimpleCaptcha in Struts 2 Form

I am trying to implement SimpleCaptcha with Struts 2, so far the image is displaying. However, it is displaying at the top of the . register.jsp: <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%> <%@ taglib prefix="s"…
k_rollo
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grails 2.4.2 simple captcha plugin installation error

I am using grails 2.4.2 and trying to install simple captcha plugin but when i run the app, i get unable to resolve class org.codehause.groovy.grails.commons.ConfigurationHolder error I understand that it could not import the class mentioned in the…
Shashank
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right way of using rails 4 devise and simple captcha

In my rails app i use devise gem, and simple captcha from here https://github.com/pludoni/simple-captcha and i want to add this captcha only for sign up action, and i do it, but i'm new to rails and didn't know - what i done is good or not? Maybe…
brabertaser19
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Django Simple Captcha - Error in {{ form.as_p }} - 'DatabaseWrapper' object has no attribute 'Database'

I'm using Django 1.6 with mongoengine. I just started to try the simple captcha but I have the following error. As it is said in http://django-simple-captcha.readthedocs.org/en/latest/usage.html I installed in my env, added to Installed apps, I…
user3584455
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How to resolve StandardWrapperValve error on Catalina?

I am creating a signup application with validation and Captcha (using SimpleCaptcha). I am able to deploy my application on localhost and everything works perfectly inclusive of the captcha. But when deployed the war file to a test server, my…
jl.
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Heroku Internal server Error logs ImportError: No module named captcha

Heroku Internal Server Error with django-simple-captcha I installed django simple captcha using > pip install django-simple-captcha and made all the necessary changes in settings.py to get captcha running on my local machine. It was working…
user2649102
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Java SimpleCaptcha: how to make the space between characters a bit larger

I am using a Java's Captcha solution called SimpleCaptcha for a web application. I would like to make space between characters a bit larger. How can I do this?
curious1
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GoogleAppEngine Java Captcha without external providers

Is there any library for captcha generation which does not contain blacklisted classes ? I would like to avoid to use recaptcha. I tried JCaptcha and SimpleCaptcha but both use AWT for image generation. The google ticket…
Jordi P.S.
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Captcha wouldn't show up in my html file in Django

I was trying to implement Captcha for my contact form. I followed the instructions, Installed Django-simple-captcha. Pillow was already installed. Made migrations, added the path to urls.py and created the appropriate class in forms.py. I put…
Arjun G
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Customizing SimpleCaptcha

We're using SimpleCaptcha http://simplecaptcha.sourceforge.net/ to creating a captcha in our registration form (running on Tomcat) We create the captcha using: Captcha captcha = new Captcha.Builder(300, 57).build(); and the captcha is displayed…
Krt_Malta
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