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Open Source Computer Vision Library
https://opencv.org/
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76 lines
2.3 KiB
76 lines
2.3 KiB
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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