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templated PixelHistogram

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This commit is contained in:
Erik Fröjdh
2026-06-05 14:51:31 +02:00
parent e7cad1a6e7
commit e4840600ae
5 changed files with 298 additions and 270 deletions
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python/src/bind_PixelHistogram.hpp
+14 -16
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@@ -11,8 +11,10 @@ namespace py = pybind11;
using namespace ::aare;
void define_pixel_histogram_bindings(py::module &m) {
py::class_<PixelHistogram>(m, "PixelHistogram",
"A histogram for pixel-wise statistics")
using PixelHistogramF32U16 = PixelHistogram<uint16_t, float>;
py::class_<PixelHistogramF32U16>(m, "PixelHistogram",
"A histogram for pixel-wise statistics")
.def(py::init<int, int, int, double, double, int, std::size_t>(),
R"(
Initialize a PixelHistogram.
@@ -34,13 +36,12 @@ void define_pixel_histogram_bindings(py::module &m) {
.def(
"fill_async",
[](PixelHistogram &self,
py::array_t<PixelHistogram::AxisType, 0> image) {
[](PixelHistogramF32U16 &self, py::array_t<float, 0> image) {
// Copy the numpy buffer into an owned NDArray while we
// still hold the GIL so we don't depend on the array's
// backing storage outliving this call.
auto view = make_view_2d(image);
NDArray<PixelHistogram::AxisType, 2> owned(view);
NDArray<float, 2> owned(view);
// Release the GIL while enqueueing - fill_async can block
// on backpressure when the queue is full.
py::gil_scoped_release release;
@@ -60,7 +61,7 @@ void define_pixel_histogram_bindings(py::module &m) {
)",
py::arg("image").noconvert())
.def("flush", &PixelHistogram::flush,
.def("flush", &PixelHistogramF32U16::flush,
R"(
Block until all images submitted via fill_async() have been
merged into the accumulators. Cheap when nothing is pending.
@@ -69,15 +70,14 @@ void define_pixel_histogram_bindings(py::module &m) {
.def(
"values",
[](const PixelHistogram &self) {
[](const PixelHistogramF32U16 &self) {
// values() implicitly flushes - release the GIL while it
// does so. Allocation/copy into the NDArray runs without
// the GIL too; only the numpy wrapping needs it.
NDArray<PixelHistogram::StorageType, 3> *ptr = nullptr;
NDArray<uint16_t, 3> *ptr = nullptr;
{
py::gil_scoped_release release;
ptr = new NDArray<PixelHistogram::StorageType, 3>(
self.values());
ptr = new NDArray<uint16_t, 3>(self.values());
}
return return_image_data(ptr);
},
@@ -94,9 +94,8 @@ void define_pixel_histogram_bindings(py::module &m) {
.def(
"bin_centers",
[](const PixelHistogram &self) {
auto ptr = new NDArray<PixelHistogram::AxisType, 1>(
self.bin_centers());
[](const PixelHistogramF32U16 &self) {
auto ptr = new NDArray<float, 1>(self.bin_centers());
return return_image_data(ptr);
},
R"(
@@ -107,9 +106,8 @@ void define_pixel_histogram_bindings(py::module &m) {
)")
.def(
"bin_edges",
[](const PixelHistogram &self) {
auto ptr =
new NDArray<PixelHistogram::AxisType, 1>(self.bin_edges());
[](const PixelHistogramF32U16 &self) {
auto ptr = new NDArray<float, 1>(self.bin_edges());
return return_image_data(ptr);
},
R"(