Tess4J-验证码解析-实例代码

/** * Copyright @ 2012 Quan Nguyen * * Licensed under the Apache License, Version 2.0 (the "License"); you may not * use this file except in compliance with the License. You may obtain a copy of * the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the * License for the specific language governing permissions and limitations under * the License. */ package net.sourceforge.tess4j; import java.nio.ByteBuffer; import java.nio.DoubleBuffer; import java.nio.FloatBuffer; import java.nio.IntBuffer; import com.sun.jna.Library; import com.sun.jna.Native; import com.sun.jna.Pointer; import com.sun.jna.ptr.IntByReference; import com.sun.jna.ptr.PointerByReference; import com.ochafik.lang.jnaerator.runtime.NativeSize; import net.sourceforge.lept4j.Boxa; import net.sourceforge.lept4j.Pix; import net.sourceforge.tess4j.util.LoadLibs; /** * A Java wrapper for <code>Tesseract OCR 3.04 API</code> using * <code>JNA Direct Mapping</code>. */ public class TessAPI1 implements Library, ITessAPI { static { Native.register(LoadLibs.getTesseractLibName()); } /** * Gets the version identifier. * * @return the version identifier */ public static native String TessVersion(); /** * Deallocates the memory block occupied by text. * * @param text the pointer to text */ public static native void TessDeleteText(Pointer text); /** * Deallocates the memory block occupied by text array. * * @param arr text array pointer reference */ public static native void TessDeleteTextArray(PointerByReference arr); /** * Deallocates the memory block occupied by integer array. * * @param arr int array */ public static native void TessDeleteIntArray(IntBuffer arr); /* Renderer API */ public static native TessResultRenderer TessTextRendererCreate(String outputbase); public static native TessResultRenderer TessHOcrRendererCreate(String outputbase); public static native TessResultRenderer TessPDFRendererCreate(String outputbase, String datadir); public static native TessResultRenderer TessUnlvRendererCreate(String outputbase); public static native TessResultRenderer TessBoxTextRendererCreate(String outputbase); public static native void TessDeleteResultRenderer(TessResultRenderer renderer); public static native void TessResultRendererInsert(TessResultRenderer renderer, TessResultRenderer next); public static native TessResultRenderer TessResultRendererNext(TessResultRenderer renderer); public static native int TessResultRendererBeginDocument(TessResultRenderer renderer, String title); public static native int TessResultRendererAddImage(TessResultRenderer renderer, PointerByReference api); public static native int TessResultRendererEndDocument(TessResultRenderer renderer); public static native Pointer TessResultRendererExtention(TessResultRenderer renderer); public static native Pointer TessResultRendererTitle(TessResultRenderer renderer); public static native int TessResultRendererImageNum(TessResultRenderer renderer); /** * Creates an instance of the base class for all Tesseract APIs. * * @return the TesseractAPI instance */ public static native TessBaseAPI TessBaseAPICreate(); /** * Disposes the TesseractAPI instance. * * @param handle the TesseractAPI instance */ public static native void TessBaseAPIDelete(TessBaseAPI handle); /** * Set the name of the input file. Needed only for training and reading a * UNLV zone file, and for searchable PDF output. * * @param handle the TesseractAPI instance * @param name name of the input file */ public static native void TessBaseAPISetInputName(TessBaseAPI handle, String name); /** * These functions are required for searchable PDF output. We need our hands * on the input file so that we can include it in the PDF without * transcoding. If that is not possible, we need the original image. * Finally, resolution metadata is stored in the PDF so we need that as * well. * * @param handle the TesseractAPI instance * @return input file name */ public static native String TessBaseAPIGetInputName(TessBaseAPI handle); public static native void TessBaseAPISetInputImage(TessBaseAPI handle, Pix pix); public static native Pix TessBaseAPIGetInputImage(TessBaseAPI handle); public static native int TessBaseAPIGetSourceYResolution(TessBaseAPI handle); public static native String TessBaseAPIGetDatapath(TessBaseAPI handle); /** * Set the name of the bonus output files. Needed only for debugging. * * @param handle the TesseractAPI instance * @param name name of the output file */ public static native void TessBaseAPISetOutputName(TessBaseAPI handle, String name); /** * Set the value of an internal "parameter." Supply the name of the * parameter and the value as a string, just as you would in a config file. * Returns false if the name lookup failed. E.g., * <code>SetVariable("tessedit_char_blacklist", "xyz");</code> to ignore x, * y and z. Or <code>SetVariable("classify_bln_numeric_mode", "1");</code> * to set numeric-only mode. <code>SetVariable</code> may be used before * <code>Init</code>, but settings will revert to defaults on * <code>End()</code>.<br> * <br> * Note: Must be called after <code>Init()</code>. Only works for non-init * variables (init variables should be passed to <code>Init()</code>). * * * @param handle the TesseractAPI instance * @param name name of the input * @param value variable value * @return 1 on success */ public static native int TessBaseAPISetVariable(TessBaseAPI handle, String name, String value); /** * Get the value of an internal int parameter. * * @param handle the TesseractAPI instance * @param name name of the input * @param value pass the int buffer value * @return 1 on success */ public static native int TessBaseAPIGetIntVariable(TessBaseAPI handle, String name, IntBuffer value); /** * Get the value of an internal bool parameter. * * @param handle the TesseractAPI instance * @param name pass the name of the variable * @param value pass the int buffer value * @return 1 on success */ public static native int TessBaseAPIGetBoolVariable(TessBaseAPI handle, String name, IntBuffer value); /** * Get the value of an internal double parameter. * * @param handle the TesseractAPI instance * @param name pass the name of the variable * @param value pass the double buffer value * @return 1 on success */ public static native int TessBaseAPIGetDoubleVariable(TessBaseAPI handle, String name, DoubleBuffer value); /** * Get the value of an internal string parameter. * * @param handle the TesseractAPI instance * @param name pass the name of the variable * @return the string value */ public static native String TessBaseAPIGetStringVariable(TessBaseAPI handle, String name); /** * Print Tesseract parameters to the given file.<br> * <br> * Note: Must not be the first method called after instance create. * * @param handle the TesseractAPI instance * @param filename name of the file where the variables will be