diff --git a/opencv.cc b/opencv.cc
index 0d0a1f1..88e6f23 100644
--- a/opencv.cc
+++ b/opencv.cc
@@ -212,6 +212,7 @@ const zend_function_entry opencv_functions[] = {
     ZEND_NS_NAMED_FE(OPENCV_NS, equalizeHist, ZEND_FN(opencv_equalize_hist), opencv_equalize_hist_arginfo)
     ZEND_NS_NAMED_FE(OPENCV_NS, resize, ZEND_FN(opencv_resize), opencv_resize_arginfo)
     ZEND_NS_NAMED_FE(OPENCV_NS, putText, ZEND_FN(opencv_put_text), NULL)
+    ZEND_NS_NAMED_FE(OPENCV_NS, absdiff, ZEND_FN(opencv_absdiff), opencv_absdiff_arginfo)
 	PHP_FE_END	/* Must be the last line in opencv_functions[] */
 };
 /* }}} */
diff --git a/source/opencv2/opencv_core.cc b/source/opencv2/opencv_core.cc
index 6c2b496..9ebedac 100644
--- a/source/opencv2/opencv_core.cc
+++ b/source/opencv2/opencv_core.cc
@@ -374,6 +374,112 @@ PHP_FUNCTION(opencv_magnitude){
 
 }
 
+/**
+ * CV\absdiff
+ * @param execute_data
+ * @param return_value
+ */
+PHP_FUNCTION(opencv_absdiff){
+        zval *src1_zval, *src2_zval, *dst_zval;
+
+        if (zend_parse_parameters(ZEND_NUM_ARGS(), "zzz",
+        &src1_zval,
+        &src2_zval,
+        &dst_zval) == FAILURE) {
+            RETURN_NULL();
+        }
+        opencv_mat_object *src1_mat_object = NULL, *src2_mat_object = NULL, *dst_mat_object = NULL;
+        opencv_scalar_object *src1_scalar_object = NULL, *src2_scalar_object = NULL, *dst_scalar_object = NULL;
+
+        int flag = 0;//1 mat,0 scalar
+
+        if(Z_TYPE_P(src1_zval) != IS_OBJECT){
+            char *error_message = (char*)malloc(strlen("src1 parameter must be Mat or Scalar object.") + 1);
+            strcpy(error_message,"src1 parameter must be Mat or Scalar object.");
+            opencv_throw_exception(error_message);//throw exception
+            free(error_message);
+        }
+
+        if(Z_OBJCE_P(src1_zval) == opencv_mat_ce){
+            src1_mat_object = Z_PHP_MAT_OBJ_P(src1_zval);
+            flag |= (1<<1);
+        }else if(Z_OBJCE_P(src1_zval) == opencv_scalar_ce){
+            src1_scalar_object = Z_PHP_SCALAR_OBJ_P(src1_zval);
+        }else{
+            char *error_message = (char*)malloc(strlen("src1 parameter must be Mat or Scalar object.") + 1);
+            strcpy(error_message,"src1 parameter must be Mat or Scalar object.");
+            opencv_throw_exception(error_message);//throw exception
+            free(error_message);
+        }
+
+        if(Z_TYPE_P(src2_zval) != IS_OBJECT){
+            char *error_message = (char*)malloc(strlen("src2 parameter must be Mat or Scalar object.") + 1);
+            strcpy(error_message,"src2 parameter must be Mat or Scalar object.");
+            opencv_throw_exception(error_message);//throw exception
+            free(error_message);
+        }
+
+        if(Z_OBJCE_P(src2_zval) == opencv_mat_ce){
+            src2_mat_object = Z_PHP_MAT_OBJ_P(src2_zval);
+            flag |= (1<<0);
+        }else if(Z_OBJCE_P(src2_zval) == opencv_scalar_ce){
+            src2_scalar_object = Z_PHP_SCALAR_OBJ_P(src2_zval);
+        }else{
+            char *error_message = (char*)malloc(strlen("src2 parameter must be Mat or Scalar object.") + 1);
+            strcpy(error_message,"src2 parameter must be Mat or Scalar object.");
+            opencv_throw_exception(error_message);//throw exception
+            free(error_message);
+        }
+
+        zval *dst_real_zval = Z_REFVAL_P(dst_zval);
+
+        if(flag == 0){ //both scalar
+            if(Z_TYPE_P(dst_real_zval) == IS_OBJECT && Z_OBJCE_P(dst_real_zval)==opencv_scalar_ce){
+                dst_scalar_object = Z_PHP_SCALAR_OBJ_P(dst_real_zval);
+            } else{
+                zval instance;
+                Scalar dst;
+                object_init_ex(&instance,opencv_scalar_ce);
+                ZVAL_COPY_VALUE(dst_real_zval, &instance);
+                dst_scalar_object = Z_PHP_SCALAR_OBJ_P(dst_real_zval);
+                dst_scalar_object->scalar = new Scalar(dst);
+            }
+
+            absdiff(*src1_scalar_object->scalar,*src2_scalar_object->scalar, *dst_scalar_object->scalar);
+            opencv_scalar_update_property_by_c_scalar(dst_real_zval, dst_scalar_object->scalar);
+        }else{
+            if(Z_TYPE_P(dst_real_zval) == IS_OBJECT && Z_OBJCE_P(dst_real_zval)==opencv_mat_ce){
+                dst_mat_object = Z_PHP_MAT_OBJ_P(dst_real_zval);
+            } else{
+                zval instance;
+                Mat dst;
+                object_init_ex(&instance,opencv_mat_ce);
+                ZVAL_COPY_VALUE(dst_real_zval, &instance);
+
+                dst_mat_object = Z_PHP_MAT_OBJ_P(dst_real_zval);
+                dst_mat_object->mat = new Mat(dst);
+            }
+            switch (flag){
+                case 1:
+                    absdiff(*src1_scalar_object->scalar,*src2_mat_object->mat, *dst_mat_object->mat);
+                    opencv_mat_update_property_by_c_mat(dst_real_zval, dst_mat_object->mat);
+                    break;
+                case 10:
+                    absdiff(*src1_mat_object->mat,*src2_scalar_object->scalar, *dst_mat_object->mat);
+                    opencv_mat_update_property_by_c_mat(dst_real_zval, dst_mat_object->mat);
+                    break;
+                case 11:
+                    absdiff(*src1_mat_object->mat,*src2_mat_object->mat, *dst_mat_object->mat);
+                    opencv_mat_update_property_by_c_mat(dst_real_zval, dst_mat_object->mat);
+                    break;
+                default:
+                    break;
+            }
+        }
+
+        RETURN_NULL();
+}
+
 /**
  * //todo mask and dtype params
  * CV\add
@@ -548,4 +654,4 @@ PHP_FUNCTION(opencv_normalize){
     opencv_mat_update_property_by_c_mat(dst_real_zval, dst_object->mat);
     RETURN_NULL();
 
-}
\ No newline at end of file
+}
diff --git a/source/opencv2/opencv_core.h b/source/opencv2/opencv_core.h
index 2443c6d..0007ea1 100644
--- a/source/opencv2/opencv_core.h
+++ b/source/opencv2/opencv_core.h
@@ -92,5 +92,11 @@ ZEND_BEGIN_ARG_INFO_EX(opencv_normalize_arginfo, 0, 0, 6)
                 ZEND_ARG_INFO(0, dtype)
 ZEND_END_ARG_INFO()
 PHP_FUNCTION(opencv_normalize);
+ZEND_BEGIN_ARG_INFO_EX(opencv_absdiff_arginfo, 0, 0, 3)
+                ZEND_ARG_INFO(0, src1)
+                ZEND_ARG_INFO(0, src2)
+                ZEND_ARG_INFO(1, dst)
+ZEND_END_ARG_INFO()
+PHP_FUNCTION(opencv_absdiff);
 
 #endif //OPENCV_CORE_H