diff options
Diffstat (limited to 'arm_compute/core/Helpers.inl')
| -rw-r--r-- | arm_compute/core/Helpers.inl | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/arm_compute/core/Helpers.inl b/arm_compute/core/Helpers.inl index 78e0c70e1b..90a4618fcc 100644 --- a/arm_compute/core/Helpers.inl +++ b/arm_compute/core/Helpers.inl @@ -303,4 +303,30 @@ inline bool set_fixed_point_position_if_zero(ITensorInfo &info, int fixed_point_ return false; } + +inline ValidRegion calculate_valid_region_scale(const ITensorInfo &src_info, const TensorShape &dst_shape, InterpolationPolicy policy, BorderSize border_size, bool border_undefined) +{ + const auto wr = static_cast<float>(dst_shape[0]) / static_cast<float>(src_info.tensor_shape()[0]); + const auto hr = static_cast<float>(dst_shape[1]) / static_cast<float>(src_info.tensor_shape()[1]); + Coordinates anchor; + anchor.set_num_dimensions(src_info.tensor_shape().num_dimensions()); + TensorShape new_dst_shape(dst_shape); + anchor.set(0, (policy == InterpolationPolicy::BILINEAR && border_undefined) ? ((static_cast<int>(src_info.valid_region().anchor[0]) + border_size.left + 0.5f) * wr - 0.5f) : + ((static_cast<int>(src_info.valid_region().anchor[0]) + 0.5f) * wr - 0.5f)); + anchor.set(1, (policy == InterpolationPolicy::BILINEAR && border_undefined) ? ((static_cast<int>(src_info.valid_region().anchor[1]) + border_size.top + 0.5f) * hr - 0.5f) : + ((static_cast<int>(src_info.valid_region().anchor[1]) + 0.5f) * hr - 0.5f)); + float shape_out_x = (policy == InterpolationPolicy::BILINEAR + && border_undefined) ? + ((static_cast<int>(src_info.valid_region().anchor[0]) + static_cast<int>(src_info.valid_region().shape[0]) - 1) - 1 + 0.5f) * wr - 0.5f : + ((static_cast<int>(src_info.valid_region().anchor[0]) + static_cast<int>(src_info.valid_region().shape[0])) + 0.5f) * wr - 0.5f; + float shape_out_y = (policy == InterpolationPolicy::BILINEAR + && border_undefined) ? + ((static_cast<int>(src_info.valid_region().anchor[1]) + static_cast<int>(src_info.valid_region().shape[1]) - 1) - 1 + 0.5f) * hr - 0.5f : + ((static_cast<int>(src_info.valid_region().anchor[1]) + static_cast<int>(src_info.valid_region().shape[1])) + 0.5f) * hr - 0.5f; + + new_dst_shape.set(0, shape_out_x - anchor[0]); + new_dst_shape.set(1, shape_out_y - anchor[1]); + + return ValidRegion(std::move(anchor), std::move(new_dst_shape)); +} } // namespace arm_compute |