============================================================================= Cross-platform file dialogs (NFD with Linux fallback) ==================

Parse backend type from command line

* Convert UTF-8 string to filesystem path * * SDL always returns UTF-8 on all platforms (including drop events). * On Windows std::filesystem::path

* Run FDnCNN inference on a BGR ROI. * * FDnCNN outputs the denoised image directly (NOT a noise residual). * * @param bgr_roi C

* Check if GUI mode should be launched */

Resolve V2 small position by inferring the canonical large source the image was downscaled from. Small Gemini outputs are 1024-class on the long side

Probe whether the Vulkan loader is dynamically loadable on this system. NCNN's internal simplevk dlopens the loader by these exact names; if the probe

* Detect whether we own our console window. * * When the binary is launched via Explorer drag-drop or double-click, * Windows creates a transient c

Non-copyable, non-movable (holds reference to backend)

Non-copyable

Non-copyable

Non-copyable

Non-copyable

* Build a 4-channel ncnn::Mat from an RGB float image and sigma value. * * ncnn::Mat layout is CHW (each channel is a contiguous H*W block).

* Compute gradient weight mask from alpha map. * * Same algorithm as WatermarkEngine::inpaint_residual() GAUSSIAN mode: * 1. Resize a

* Extract 3-channel result from ncnn::Mat to cv::Mat (RGB float). */

* Get accent color */

* Get status color based on state */

Convenience overload: defaults to V2 (current profile).

Helper function to initialize alpha maps