diff --git a/include/tim/vx/ops/roi_align.h b/include/tim/vx/ops/roi_align.h
index dead1b6..0513f5f 100644
--- a/include/tim/vx/ops/roi_align.h
+++ b/include/tim/vx/ops/roi_align.h
@@ -30,7 +30,7 @@ namespace vx {
 namespace ops {
 
 /**
- * ## ROI_ALIGN
+ * ## RoiAlign
  *
  * Select and scale the feature map of each region of interest to a unified output
  * size by average pooling sampling points from bilinear interpolation.
@@ -47,9 +47,9 @@ namespace ops {
  *   used to compute the output.
  */
 
-class ROI_Align : public DirectMapOp {
+class RoiAlign : public DirectMapOp {
  public:
-  ROI_Align(Graph* graph, int32_t output_height, int32_t output_width,
+  RoiAlign(Graph* graph, int32_t output_height, int32_t output_width,
             float height_ratio, float width_ratio, int32_t height_sample_num,
             int32_t width_sample_num);
 
@@ -65,6 +65,8 @@ class ROI_Align : public DirectMapOp {
   int32_t width_sample_num_;
 };
 
+using ROI_Align = RoiAlign;
+
 }  // namespace ops
 }  // namespace vx
 }  // namespace tim
diff --git a/include/tim/vx/ops/roi_pool.h b/include/tim/vx/ops/roi_pool.h
index 953b3f3..311b652 100644
--- a/include/tim/vx/ops/roi_pool.h
+++ b/include/tim/vx/ops/roi_pool.h
@@ -33,7 +33,7 @@ namespace vx {
 namespace ops {
 
 /**
- * ## ROI_POOL
+ * ## RoiPool
  *
  * Select and scale the feature map of each region of interest to a unified output
  * size by max-pooling.
@@ -44,9 +44,9 @@ namespace ops {
  *
  */
 
-class ROI_Pool : public DirectMapOp {
+class RoiPool : public DirectMapOp {
  public:
-  ROI_Pool(Graph* graph, PoolType type, float scale,
+  RoiPool(Graph* graph, PoolType type, float scale,
             const std::array<uint32_t, 2>& size);
 
   std::shared_ptr<Operation> Clone(
@@ -58,6 +58,8 @@ class ROI_Pool : public DirectMapOp {
   std::array<uint32_t, 2> size_;
 };
 
+using ROI_Pool = RoiPool;
+
 }  // namespace ops
 }  // namespace vx
 }  // namespace tim
diff --git a/src/tim/vx/ops/roi_align.cc b/src/tim/vx/ops/roi_align.cc
index d9ad4d1..c36aac1 100644
--- a/src/tim/vx/ops/roi_align.cc
+++ b/src/tim/vx/ops/roi_align.cc
@@ -30,7 +30,7 @@ namespace tim {
 namespace vx {
 namespace ops {
 
-ROI_Align::ROI_Align(Graph* graph, int32_t output_height, int32_t output_width,
+RoiAlign::RoiAlign(Graph* graph, int32_t output_height, int32_t output_width,
           float height_ratio, float width_ratio, int32_t height_sample_num,
           int32_t width_sample_num)
     : DirectMapOp(graph, VSI_NN_OP_ROI_ALIGN),
@@ -49,9 +49,9 @@ ROI_Align::ROI_Align(Graph* graph, int32_t output_height, int32_t output_width,
   this->impl()->node()->nn_param.roi_align.width_sample_num = width_sample_num;
 }
 
-std::shared_ptr<Operation> ROI_Align::Clone(
+std::shared_ptr<Operation> RoiAlign::Clone(
     std::shared_ptr<Graph>& graph) const {
-  return graph->CreateOperation<ROI_Align>(
+  return graph->CreateOperation<RoiAlign>(
       this->output_height_, this->output_width_, this->height_ratio_,
       this->width_ratio_, this->height_sample_num_, this->width_sample_num_);
 }
diff --git a/src/tim/vx/ops/roi_align_test.cc b/src/tim/vx/ops/roi_align_test.cc
index 00fd6d4..bd21542 100644
--- a/src/tim/vx/ops/roi_align_test.cc
+++ b/src/tim/vx/ops/roi_align_test.cc
@@ -29,7 +29,7 @@
 #include "tim/vx/graph.h"
 #include "tim/vx/types.h"
 
-TEST(ROI_Align, shape_4_2_1_1_float32) {
+TEST(RoiAlign, shape_4_2_1_1_float32) {
   auto ctx = tim::vx::Context::Create();
   auto graph = ctx->CreateGraph();
 
@@ -83,7 +83,7 @@ TEST(ROI_Align, shape_4_2_1_1_float32) {
       graph->CreateTensor(batch_index_spec, batch_index_data.data());
   auto output_tensor = graph->CreateTensor(output_spec);
 
-  auto roi_align = graph->CreateOperation<tim::vx::ops::ROI_Align>(
+  auto roi_align = graph->CreateOperation<tim::vx::ops::RoiAlign>(
       out_height, out_width, height_ratio, width_ratio, height_sample_num,
       width_sample_num);
   (*roi_align)
diff --git a/src/tim/vx/ops/roi_pool.cc b/src/tim/vx/ops/roi_pool.cc
index e0243ce..91a94ea 100644
--- a/src/tim/vx/ops/roi_pool.cc
+++ b/src/tim/vx/ops/roi_pool.cc
@@ -31,7 +31,7 @@ namespace tim {
 namespace vx {
 namespace ops {
 
-ROI_Pool::ROI_Pool(Graph* graph, PoolType type, float scale,
+RoiPool::RoiPool(Graph* graph, PoolType type, float scale,
                    const std::array<uint32_t, 2>& size)
     : DirectMapOp(graph, VSI_NN_OP_ROI_POOL),
       type_(type),
@@ -43,9 +43,9 @@ ROI_Pool::ROI_Pool(Graph* graph, PoolType type, float scale,
   this->impl()->node()->nn_param.roi_pool.size[1] = size[1];
 }
 
-std::shared_ptr<Operation> ROI_Pool::Clone(
+std::shared_ptr<Operation> RoiPool::Clone(
     std::shared_ptr<Graph>& graph) const {
-  return graph->CreateOperation<ROI_Pool>(
+  return graph->CreateOperation<RoiPool>(
       this->type_, this->scale_, this->size_);
 }
 
diff --git a/src/tim/vx/ops/roi_pool_test.cc b/src/tim/vx/ops/roi_pool_test.cc
index 33e7e46..09729b9 100644
--- a/src/tim/vx/ops/roi_pool_test.cc
+++ b/src/tim/vx/ops/roi_pool_test.cc
@@ -29,7 +29,7 @@
 #include "tim/vx/graph.h"
 #include "tim/vx/types.h"
 
-TEST(ROI_Pool, shape_4_2_1_1_float32) {
+TEST(RoiPool, shape_4_2_1_1_float32) {
   auto ctx = tim::vx::Context::Create();
   auto graph = ctx->CreateGraph();
 
@@ -81,7 +81,7 @@ TEST(ROI_Pool, shape_4_2_1_1_float32) {
    std::array<uint32_t, 2> size;
    size[0] = out_height;
    size[1] = out_width;
-  auto roi_pool = graph->CreateOperation<tim::vx::ops::ROI_Pool>(tim::vx::PoolType::MAX, scale, size);
+  auto roi_pool = graph->CreateOperation<tim::vx::ops::RoiPool>(tim::vx::PoolType::MAX, scale, size);
   (*roi_pool)
       .BindInput(input_tensor)
       .BindInput(regions_tensor)