Merge pull request #16473 from ashishkrshrivastava:opencvtf

modules/dnn/src/tensorflow/tf_importer.cpp

@@ -1468,6 +1468,8 @@ void TFImporter::populateNet(Net dstNet)
             int end_mask = getLayerAttr(layer, "end_mask").i();
             for (int i = 0; i < num; ++i)
             {
+                if (ends.at<int>(i) < 0)
+                    ends.at<int>(i) -= 1;
                 if (end_mask & (1 << i))
                     ends.at<int>(i) = -1;
                 if (strides.at<int>(i) != 1)

modules/dnn/test/test_tf_importer.cpp

@@ -808,6 +808,8 @@ TEST_P(Test_TensorFlow_layers, slice)
         (target == DNN_TARGET_OPENCL || target == DNN_TARGET_OPENCL_FP16))
         applyTestTag(target == DNN_TARGET_OPENCL ? CV_TEST_TAG_DNN_SKIP_IE_OPENCL : CV_TEST_TAG_DNN_SKIP_IE_OPENCL_FP16,
                      CV_TEST_TAG_DNN_SKIP_IE_NN_BUILDER);
+    double l1 = target == DNN_TARGET_MYRIAD ? 4.9e-3 : default_l1;
+    runTensorFlowNet("crop2d", false, l1);
     runTensorFlowNet("slice_4d");
     runTensorFlowNet("strided_slice");
 }