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77 lines
2.3 KiB
ReStructuredText
77 lines
2.3 KiB
ReStructuredText
Non-Photorealistic Rendering
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============================
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.. highlight:: cpp
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edgePreservingFilter
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--------------------
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Filtering is the fundamental operation in image and video processing. Edge-preserving smoothing filters are used in many different applications [EM11]_.
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.. ocv:function:: void edgePreservingFilter(InputArray src, OutputArray dst, int flags = 1, float sigma_s = 60, float sigma_r = 0.4f)
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:param src: Input 8-bit 3-channel image.
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:param dst: Output 8-bit 3-channel image.
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:param flags: Edge preserving filters:
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* **RECURS_FILTER** = 1
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* **NORMCONV_FILTER** = 2
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:param sigma_s: Range between 0 to 200.
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:param sigma_r: Range between 0 to 1.
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detailEnhance
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-------------
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This filter enhances the details of a particular image.
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.. ocv:function:: void detailEnhance(InputArray src, OutputArray dst, float sigma_s = 10, float sigma_r = 0.15f)
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:param src: Input 8-bit 3-channel image.
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:param dst: Output image with the same size and type as ``src``.
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:param sigma_s: Range between 0 to 200.
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:param sigma_r: Range between 0 to 1.
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pencilSketch
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------------
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Pencil-like non-photorealistic line drawing
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.. ocv:function:: void pencilSketch(InputArray src, OutputArray dst1, OutputArray dst2, float sigma_s = 60, float sigma_r = 0.07f, float shade_factor = 0.02f)
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:param src: Input 8-bit 3-channel image.
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:param dst1: Output 8-bit 1-channel image.
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:param dst2: Output image with the same size and type as ``src``.
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:param sigma_s: Range between 0 to 200.
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:param sigma_r: Range between 0 to 1.
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:param shade_factor: Range between 0 to 0.1.
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stylization
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-----------
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Stylization aims to produce digital imagery with a wide variety of effects not focused on photorealism. Edge-aware filters are ideal for stylization, as they can abstract regions of low contrast while preserving, or enhancing, high-contrast features.
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.. ocv:function:: void stylization(InputArray src, OutputArray dst, float sigma_s = 60, float sigma_r = 0.45f)
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:param src: Input 8-bit 3-channel image.
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:param dst: Output image with the same size and type as ``src``.
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:param sigma_s: Range between 0 to 200.
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:param sigma_r: Range between 0 to 1.
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.. [EM11] Eduardo S. L. Gastal, Manuel M. Oliveira, "Domain transform for edge-aware image and video processing", ACM Trans. Graph. 30(4): 69, 2011.
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