rif_image_filter_type

Usage

Defines the filter type to create. See rifContextCreateImageFilter().

Generic Values

Name	Value	Brief Explanation
RIF_IMAGE_FILTER_NORMALIZATION	0x1	Filter that will divide all color components by alpha value.
RIF_IMAGE_FILTER_GAMMA_CORRECTION	0x2	Performs gamma correction for input image.
RIF_IMAGE_FILTER_RESAMPLE	0x3	Image resampling.
RIF_IMAGE_FILTER_RESAMPLE_DYNAMIC	0x24	Resamples the image generating resample coefficients on the fly.
RIF_IMAGE_FILTER_REMAP_RANGE	0x28	Remaps an image in a given range.

Anti-Aliasing

Name	Value	Brief Explanation
RIF_IMAGE_FILTER_MLAA	0xF	The filter performs Morphological Antialiasing (MLAA) for the input image.

Blending

Name	Value	Brief Explanation
RIF_IMAGE_FILTER_WEIGHTED_SUM	0x12	Calculates weighted sum of the images.
RIF_IMAGE_FILTER_MULT	0x13	Calculates product of the images.

Blurring

Name	Value	Brief Explanation
RIF_IMAGE_FILTER_GAUSSIAN_BLUR	0x4	Gaussian blur (also known as Gaussian smoothing). The result of blurring an image by a Gaussian function.
RIF_IMAGE_FILTER_MOTION_BLUR	0x1F	Motion blurring filter.

Denoising

Name	Value	Brief Explanation
RIF_IMAGE_FILTER_BILATERAL_DENOISE	0xC	Apply bilateral denoiser. A bilateral filter is a non-linear, edge-preserving, and noise-reducing smoothing filter for images. It replaces the intensity of each pixel with a weighted average of intensity values from nearby pixels.
RIF_IMAGE_FILTER_LWR_DENOISE	0xD	Local Weighted Regression filter. The filter builds a linear regression model of the dependence of color on the auxiliary parameters.
RIF_IMAGE_FILTER_EAW_DENOISE	0xE	Edge-avoiding À-Trous wavelet denoiser. Can be used with Temporal Acculumation Filter to do SVGF filter.
RIF_IMAGE_FILTER_MEDIAN_DENOISE	0x1E	Median denoiser replaces the pixel by the median value from the window.

Edge Detection

Name	Value	Brief Explanation
RIF_IMAGE_FILTER_SOBEL	0x10	Sobel filter for edge detection.
RIF_IMAGE_FILTER_LAPLACE	0x11	Laplace operator based edge detection.
RIF_IMAGE_FILTER_EMBOSS	0x20	An emboss filter gives a 3D bumpmap effect to the image.

Enhance

Name	Value	Brief Explanation
RIF_IMAGE_FILTER_SHARPEN	0x14	Makes the image sharper.

Machine Learning

Name	Value	Brief Explanation
RIF_IMAGE_FILTER_AI_DENOISE	0x3E	AI based denoiser.
RIF_IMAGE_FILTER_AI_UPSCALE	0x3F	AI based upscaler.
RIF_CUSTOM_AI_MODEL	0x32	Apply user defined AI model to the image.
RIF_IMAGE_FILTER_OPENIMAGE_DENOISE	0x4E	Intel Open Image based denoiser (https://openimagedenoise.github.io/).

Noise

Name	Value	Brief Explanation
RIF_IMAGE_FILTER_SPREAD	0x1C	Move pixels around randomly.
RIF_IMAGE_FILTER_RGB_NOISE	0x1D	Apply simple noise to the image.

Other

Name	Value	Brief Explanation
RIF_IMAGE_FILTER_MOTION_BUFFER	0x15	Generate motion vectors using the previous matrix and the current matrix for a frame.
RIF_IMAGE_FILTER_TEMPORAL_ACCUMULATOR	0x16	Temporal accumulation of ray tracer results. Using a view projection matrix, the filter performs reprojection of the previously stored buffer for new camera position and adds this data to the new frame. Note that the filter retains internal state.
RIF_IMAGE_FILTER_SHADOW_CATCHER	0x17	Shadow catcher filter.
RIF_IMAGE_FILTER_USER_DEFINED	0x18	User defined filter.
RIF_IMAGE_FILTER_DILATE_ERODE	0x1A	Dilation/erosion filter.
RIF_IMAGE_FILTER_POSTERIZE	0x1B	Posterization filter.
RIF_IMAGE_FILTER_BLOOM	0x30	Apply a bloom effect.
RIF_IMAGE_FILTER_DEPTH_OF_FIELD	0x33	Depth of field filter.
RIF_IMAGE_FILTER_NDC_DEPTH	0x34	NDC depth filter.
RIF_IMAGE_FILTER_CONVERT	0x35	Image conversion filter.
RIF_IMAGE_FILTER_BGRA_TO_RGBA	0x36	BGRA TO RGBA conversion filter.

Rotate

Name	Value	Brief Explanation
RIF_IMAGE_FILTER_FLIP_VERT	0x21	Flip the image vertically.
RIF_IMAGE_FILTER_FLIP_HOR	0x22	Flip the image horizontally.
RIF_IMAGE_FILTER_ROTATE	0x23	Rotate the image.

Tone Mapping

Name	Value	Brief Explanation
RIF_IMAGE_FILTER_COLOR_SPACE	0x5	Change the color space of the image.
RIF_IMAGE_FILTER_HUE_SATURATION	0x6	Adjust hue, saturation.
RIF_IMAGE_FILTER_FILMIC_TONEMAP	0x7	Apply Filmic tone mapping.
RIF_IMAGE_FILTER_REINHARD02_TONEMAP	0x8	Apply Reinhard02 tone mapping.
RIF_IMAGE_FILTER_EXPONENTIAL_TONEMAP	0x9	Apply exponential tone mapping.
RIF_IMAGE_FILTER_LINEAR_TONEMAP	0xA	Apply linear tone mapping.
RIF_IMAGE_FILTER_DRAGO_TONEMAP	0xB	Apply linear tone mapping.
RIF_IMAGE_FILTER_AUTOLINEAR_TONEMAP	0x25	Apply autolinear tone mapping.
RIF_IMAGE_FILTER_MAXWHITE_TONEMAP	0x26	Apply max white tone mapping.
RIF_IMAGE_FILTER_PHOTO_LINEAR_TONEMAP	0x27	Apply photo linear tone mapping.
RIF_IMAGE_FILTER_PHOTO_TONEMAP	0x29	Apply photo realistics tone mapping.
RIF_IMAGE_FILTER_FILMIC_UNCHARTED_TONEMAP	0x4F	Apply filmic uncharted tone mapping.

Binary operations

Name	Value	Brief Explanation
RIF_IMAGE_FILTER_ADD	0x50	Apply add operation.
RIF_IMAGE_FILTER_MUL	0x51	Apply multiply operation.
RIF_IMAGE_FILTER_SUB	0x52	Apply subtract operation.
RIF_IMAGE_FILTER_DIV	0x53	Apply divide operation.
RIF_IMAGE_FILTER_MAX	0x54	Apply max operation.
RIF_IMAGE_FILTER_MIN	0x55	Apply min operation.