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/******************************************************************************
* Copyright (C) 2018 Alejandro Colomar Andrés *
******************************************************************************/
/******************************************************************************
******* headers **************************************************************
******************************************************************************/
/* Standard C ----------------------------------------------------------------*/
/* snprintf() */
#include <cstdio>
/* strcmp() */
#include <cstring>
/* Packages ------------------------------------------------------------------*/
/* openCV */
#include <opencv2/opencv.hpp>
/* zbar::ZBAR_EAN13 */
#include <zbar.h>
/* Project -------------------------------------------------------------------*/
/* zb_codes */
#include "img_iface.hpp"
/* user_iface_log */
#include "user_iface.hpp"
/* Module --------------------------------------------------------------------*/
#include "proc_common.hpp"
#include "proc_label.hpp"
/******************************************************************************
******* variables ************************************************************
******************************************************************************/
/* Global --------------------------------------------------------------------*/
/* Static --------------------------------------------------------------------*/
static std::vector <std::vector <cv::Point_ <int>>> contours;
static class cv::Mat hierarchy;
static class cv::RotatedRect rect;
/******************************************************************************
******* static functions *****************************************************
******************************************************************************/
static void result_label (int status);
static int label_find (void);
static void label_align (void);
static int find_cerdo (void);
static int barcode_read (void);
static int barcode_chk_prod (void);
static void price_read (void);
static int price_chk (void);
/******************************************************************************
******* global functions *****************************************************
******************************************************************************/
int proc_label (void)
{
int status;
proc_save_mem(0);
/* Find label (position and angle) */
{
/* Measure time */
clock_start();
status = label_find();
if (status) {
result_label(status);
return status;
}
/* Measure time */
clock_stop("Find label");
}
/* Align label and extract green component */
{
/* Measure time */
clock_start();
label_align();
/* Measure time */
clock_stop("Align label");
}
/* Find "Cerdo" in aligned image */
{
/* Measure time */
clock_start();
status = find_cerdo();
if (status) {
result_label(status);
return status;
}
/* Measure time */
clock_stop("Find cerdo (OCR)");
}
/* Read barcode in original image */
{
/* Measure time */
clock_start();
status = barcode_read();
if (status) {
result_label(status);
return status;
}
/* Measure time */
clock_stop("Read barcode (zbar)");
}
/* Check product code in barcode */
{
/* Measure time */
clock_start();
status = barcode_chk_prod();
if (status) {
result_label(status);
return status;
}
/* Measure time */
clock_stop("Chk product code");
}
/* Read price in aligned image (green component) */
{
/* Measure time */
clock_start();
price_read();
/* Measure time */
clock_stop("Read price (OCR)");
}
/* Check label price with barcode price */
{
/* Measure time */
clock_start();
status = price_chk();
if (status) {
result_label(status);
return status;
}
/* Measure time */
clock_stop("Check price");
}
status = LABEL_OK;
result_label(status);
return status;
}
/******************************************************************************
******* static functions *****************************************************
******************************************************************************/
static void result_label (int status)
{
/* Cleanup */
/* Write result into log */
char result [LOG_LINE_LEN];
switch (status) {
case LABEL_OK:
snprintf(user_iface_log.line[user_iface_log.len], LOG_LINE_LEN,
"Label: OK");
break;
case LABEL_NOK_LABEL:
snprintf(user_iface_log.line[user_iface_log.len], LOG_LINE_LEN,
"Label: NOK_LABEL");
break;
case LABEL_NOK_CERDO:
snprintf(user_iface_log.line[user_iface_log.len], LOG_LINE_LEN,
"Label: NOK_CERDO");
break;
case LABEL_NOK_BCODE:
snprintf(user_iface_log.line[user_iface_log.len], LOG_LINE_LEN,
"Label: NOK_BCODE");
break;
case LABEL_NOK_PRODUCT:
snprintf(user_iface_log.line[user_iface_log.len], LOG_LINE_LEN,
"Label: NOK_PRODUCT");
break;
case LABEL_NOK_PRICE:
snprintf(user_iface_log.line[user_iface_log.len], LOG_LINE_LEN,
"Label: NOK_PRICE");
break;
default:
snprintf(user_iface_log.line[user_iface_log.len], LOG_LINE_LEN,
"Label: NOK");
break;
}
user_iface_log.lvl[user_iface_log.len] = 0;
(user_iface_log.len)++;
}
static int label_find (void)
{
int status;
proc_load_mem(0);
proc_cmp(IMG_IFACE_CMP_BLUE);
proc_smooth(IMGI_SMOOTH_MEDIAN, 7);
#if 0
proc_adaptive_threshold(CV_ADAPTIVE_THRESH_MEAN_C,
CV_THRESH_BINARY, 5);
#else
proc_not();
#endif
proc_smooth(IMGI_SMOOTH_MEAN, 21);
proc_threshold(cv::THRESH_BINARY_INV, 2);
proc_dilate_erode(100);
proc_contours(&contours, &hierarchy);
/* If no contour is found, error: NOK_LABEL */
if (!contours.size()) {
status = LABEL_NOK_LABEL;
return status;
}
proc_min_area_rect(&(contours[0]), &rect, true);
/* If angle is < -45º, it is taking into acount the incorrect side */
if (rect.angle < -45.0) {
int tmp;
rect.angle += 90.0;
tmp = rect.size.width;
rect.size.width = rect.size.height;
rect.size.height = tmp;
}
status = LABEL_OK;
return status;
}
static void label_align (void)
{
proc_load_mem(0);
proc_rotate(&rect);
proc_cmp(IMG_IFACE_CMP_GREEN);
proc_save_mem(1);
}
static int find_cerdo (void)
{
int status;
proc_load_mem(1);
int x;
int y;
int w;
int h;
x = rect.center.x - (1.05 * rect.size.width / 2);
if (x < 0) {
x = 0;
}
y = rect.center.y - (1.47 * rect.size.height / 2);
if (y < 0) {
y = 0;
}
w = rect.size.width / 2;
h = rect.size.height * 0.20;
proc_ROI(x, y, w, h);
proc_threshold(cv::THRESH_BINARY, IMG_IFACE_THR_OTSU);
proc_erode(1);
proc_OCR(IMG_IFACE_OCR_LANG_ENG, IMG_IFACE_OCR_CONF_NONE);
/* Compare Label text to "Cerdo". */
bool cerdo_nok;
cerdo_nok = strncmp(img_ocr_text, "Cerdo",
strlen("Cerdo"));
/* If string doesn't match, error: NOK_CERDO */
if (cerdo_nok) {
status = LABEL_NOK_CERDO;
return status;
}
status = LABEL_OK;
return status;
}
static int barcode_read (void)
{
int status;
proc_load_mem(0);
proc_cmp(IMG_IFACE_CMP_GREEN);
proc_zbar(zbar::ZBAR_EAN13);
/* Check that 1 and only 1 bcode is read. */
if (zb_codes.n != 1) {
status = LABEL_NOK_BCODE;
return status;
}
status = LABEL_OK;
return status;
}
static int barcode_chk_prod (void)
{
int status;
bool prod_nok;
prod_nok = strncmp(zb_codes.arr[0].data, "2301703",
strlen("2301703"));
if (prod_nok) {
status = LABEL_NOK_PRODUCT;
return status;
}
status = LABEL_OK;
return status;
}
static void price_read (void)
{
proc_load_mem(1);
int x;
int y;
int w;
int h;
x = rect.center.x + (0.33 * rect.size.width / 2);
y = rect.center.y + (0.64 * rect.size.height / 2);
w = rect.size.width * 0.225;
h = rect.size.height * 0.15;
proc_ROI(x, y, w, h);
proc_smooth(IMGI_SMOOTH_MEAN, 3);
proc_threshold(cv::THRESH_BINARY, IMG_IFACE_THR_OTSU);
proc_dilate_erode(1);
proc_threshold(cv::THRESH_BINARY, 1);
proc_OCR(IMG_IFACE_OCR_LANG_DIGITS, IMG_IFACE_OCR_CONF_PRICE);
}
static int price_chk (void)
{
int status;
char price [80];
/* Extract price from barcode */
if (zb_codes.arr[0].data[8] != '0') {
snprintf(price, 80, "%c%c.%c%c",
zb_codes.arr[0].data[8],
zb_codes.arr[0].data[9],
zb_codes.arr[0].data[10],
zb_codes.arr[0].data[11]);
} else {
snprintf(price, 80, "%c.%c%c",
zb_codes.arr[0].data[9],
zb_codes.arr[0].data[10],
zb_codes.arr[0].data[11]);
}
/* Compare price from barcode and from text */
bool price_nok;
price_nok = strncmp(img_ocr_text, price, strlen(price));
if (price_nok) {
status = LABEL_NOK_PRICE;
return status;
}
status = LABEL_OK;
return status;
}
/******************************************************************************
******* end of file **********************************************************
******************************************************************************/
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