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/*
* Copyright (c) 2011 Samsung Electronics Co., Ltd All Rights Reserved
*
* 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.
*/
/*
Extracting face feature from image file
*/
#include <stdio.h>
#include <stdlib.h>
#include <face.h>
#include <image_util.h>
#define FILE_JPG "/opt/media/Images/face_1.jpg"
int main(int argc, char *argv[])
{
int err;
unsigned char *buffer = NULL;
int width, height;
unsigned int size;
err = image_util_decode_jpeg (FILE_JPG, IMAGE_UTIL_COLORSPACE_YUV420 , &buffer, &width, &height, &size);
if ( err != IMAGE_UTIL_ERROR_NONE )
{
printf("Image loading failed\n");
return 0;
}
face_h face;
err = face_create(&face);
if ( err != FACE_ERROR_NONE )
{
printf("Cannot create face handle\n");
return 0;
}
face_image_h image;
err = face_image_create(FACE_IMAGE_COLORSPACE_YUV420, buffer, width, height, size, &image);
if ( err != FACE_ERROR_NONE )
{
printf("Cannot create face handle\n");
return 0;
}
face_rect_s *rects = NULL;
int nCount;
err = face_detect_faces(face, FACE_IMAGE_TYPE_SINGLE, image, &rects, &nCount);
if ( err != FACE_ERROR_NONE )
{
printf("Error occured during detecting\n");
return 0;
}
if ( nCount == 0 )
{
printf("Cannot find face\n");
return 0;
}
face_rect_s *interest_face = &rects[0]; // Choose 1st faces
face_component_h component;
err = face_extract_component(face, image, interest_face, &component);
if ( err != FACE_ERROR_NONE )
{
printf("Cannot extract face component\n");
return 0;
}
face_feature_h feature;
err = face_extract_feature(face, image, component, &feature);
if ( err != FACE_ERROR_NONE )
{
printf("Cannot extract face feature\n");
return 0;
}
unsigned char *feature_buffer;
int feature_length;
err = face_feature_get_data(feature, &feature_buffer, &feature_length);
if ( err != FACE_ERROR_NONE )
{
printf("Cannot extract face component\n");
return 0;
}
// Now you have serialized fecture data
FILE *fp;
fp = fopen("feature_vector.dat", "wb");
fwrite(feature_buffer, 1, feature_length, fp);
fclose(fp);
printf("Write feature vector to disk\n");
free(rects);
face_component_destroy(component);
face_feature_destroy(feature);
face_image_destroy(image);
face_destroy(face);
free(buffer);
return 0;
}
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