jniopencv_cudaobjdetect.dll: Can't find dependent libraries

[jitterhorse]

Hi,
when i create:

CudaCascadeClassifier ccc;
String face_cascade_name = "haarcascade_frontalface_default.xml";
ccc = CudaCascadeClassifier.create(face_cascade_name);

i get

java.lang.UnsatisfiedLinkError: C:\Users\jitterhorse\workspace\LIBS\javacpp\opencv-3.4.2-1.4.2-windows-x86_64-gpu.jar\org\bytedeco\javacpp\windows-x86_64-gpu\jniopencv_cudaobjdetect.dll: Can't find dependent libraries
	at java.lang.ClassLoader$NativeLibrary.load(Native Method)
	at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1941)
	at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1857)
	at java.lang.Runtime.loadLibrary0(Runtime.java:870)
	at java.lang.System.loadLibrary(System.java:1122)
	at org.bytedeco.javacpp.Loader.loadLibrary(Loader.java:1225)
	at org.bytedeco.javacpp.Loader.load(Loader.java:983)
	at org.bytedeco.javacpp.Loader.load(Loader.java:882)
	at org.bytedeco.javacpp.opencv_cudaobjdetect.<clinit>(opencv_cudaobjdetect.java:26)
	at java.lang.Class.forName0(Native Method)
	at java.lang.Class.forName(Class.java:348)
	at org.bytedeco.javacpp.Loader.load(Loader.java:941)
	at org.bytedeco.javacpp.Loader.load(Loader.java:882)
	at org.bytedeco.javacpp.opencv_cudaobjdetect$CudaCascadeClassifier.<clinit>(opencv_cudaobjdetect.java:306)
	at org.jitterhorse.mav.cppCV2.App.main(App.java:49)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.codehaus.mojo.exec.ExecJavaMojo$1.run(ExecJavaMojo.java:282)
	at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.UnsatisfiedLinkError: C:\Users\jitterhorse\.javacpp\cache\opencv-3.4.2-1.4.2-windows-x86_64-gpu.jar\org\bytedeco\javacpp\windows-x86_64-gpu\jniopencv_cudaobjdetect.dll: Can't find dependent libraries
	at java.lang.ClassLoader$NativeLibrary.load(Native Method)
	at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1941)
	at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1824)
	at java.lang.Runtime.load0(Runtime.java:809)
	at java.lang.System.load(System.java:1086)
	at org.bytedeco.javacpp.Loader.loadLibrary(Loader.java:1205)

This is my POM:

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <groupId>org.jitterhorse.mav</groupId>
  <artifactId>cppCV2</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>jar</packaging>

  <name>cppCV2</name>
  <url>http://maven.apache.org</url>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  </properties>

  <dependencies>
 
        <dependency>
        	<groupId>org.bytedeco.javacpp-presets</groupId>
        	<artifactId>opencv-platform</artifactId>
        	<version>3.4.2-1.4.2</version>
        </dependency>
         
        <dependency>
            <groupId>org.bytedeco.javacpp-presets</groupId>
            <artifactId>opencv</artifactId>
            <version>3.4.2-1.4.2</version>
            <classifier>windows-x86_64-gpu</classifier>
        </dependency>
 
        <dependency>
            <groupId>org.bytedeco.javacpp-presets</groupId>
            <artifactId>cuda</artifactId>
            <version>9.2-7.1-1.4.2</version>
            <classifier>windows-x86_64-redist</classifier>
        </dependency>

  </dependencies>
</project>

I'm on Windows 10 / 64 bit developing with Eclipse Oxygen and having Cuda 9.2 with cudnn 7.1 installed and registed in the system variables.

Do I need to install and build a OpenCV with CUDA myself?

I would be happy about any help!

Thanks in advance
jit

[saudet]

That's a bug in the presets. We need to load opencv_cudalegacy342.dll but it's missing from the preload list. For now, we can work around this easily by preloading some other module that also uses opencv_cudalegacy342.dll, for example opencv_stitching, like this:

Loader.load(org.bytedeco.javacpp.opencv_stitching.class);

Thanks for reporting!

[jitterhorse]

Thank you very much! It's working now.
<3

[saudet]

Fix included in version 1.4.3! Thanks again for reporting.