/ocr/ocrservice/jni/hydrogen/jni/thresholder.cpp
C++ | 81 lines | 52 code | 14 blank | 15 comment | 2 complexity | fadd43b560c1870144100710ff721a26 MD5 | raw file
1/* 2 * Copyright 2011, Google Inc. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#include "common.h" 18#include "thresholder.h" 19#include "utilities.h" 20 21#ifdef __cplusplus 22extern "C" { 23#endif /* __cplusplus */ 24 25jint Java_com_googlecode_eyesfree_textdetect_Thresholder_nativeSobelEdgeThreshold(JNIEnv *env, 26 jclass clazz, 27 jint nativePix, 28 jint threshold) { 29 LOGV(__FUNCTION__); 30 31 PIX *pixs = (PIX *) nativePix; 32 PIX *pixd = pixThreshedSobelEdgeFilter(pixs, (l_int32) threshold); 33 34 return (jint) pixd; 35} 36 37jint Java_com_googlecode_eyesfree_textdetect_Thresholder_nativeEdgeAdaptiveThreshold( 38 JNIEnv *env, 39 jclass clazz, 40 jint nativePix, 41 jint tileX, 42 jint tileY, 43 jint threshold, 44 jint average) { 45 LOGV(__FUNCTION__); 46 47 PIX *pixs = (PIX *) nativePix; 48 PIX *pixd; 49 50 if (pixEdgeAdaptiveThreshold(pixs, &pixd, (l_int32) tileX, (l_int32) tileY, (l_int32) threshold, 51 (l_int32) average)) { 52 return (jint) 0; 53 } 54 55 return (jint) pixd; 56} 57 58jint Java_com_googlecode_eyesfree_textdetect_Thresholder_nativeFisherAdaptiveThreshold( 59 JNIEnv *env, 60 jclass clazz, 61 jint nativePix, 62 jint tileX, 63 jint tileY, 64 jfloat scoreFract, 65 jfloat thresh) { 66 LOGV(__FUNCTION__); 67 68 PIX *pixs = (PIX *) nativePix; 69 PIX *pixd; 70 71 if (pixFisherAdaptiveThreshold(pixs, &pixd, (l_int32) tileX, (l_int32) tileY, 72 (l_float32) scoreFract, (l_float32) thresh)) { 73 return (jint) 0; 74 } 75 76 return (jint) pixd; 77} 78 79#ifdef __cplusplus 80} 81#endif /* __cplusplus */