Visual component "HDRSoftClipper"

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Visual component "HDRSoftClipper"

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The HDRSoftClipper component allows you to set the upper and lower soft clipping of color channels.

 

Visual part

component_hdrsoftclipper_visual

 

If some colors at the input of the component lie outside the LDR range, it makes sense to apply a soft limit (soft clipping) to them. Unlike simple clipping, in which the color channel that has gone beyond LDR is simply equated to the upper or lower border, soft clipping allows you to save the "blown out" details of the image (image areas whose colors lie outside LDR). A built-in histogram in the component makes it easy to assess the need and degree of application of soft-clipping in each case.

The component presents four horizontal boundaries: the upper and lower boundaries of the upper soft-clipping area, as well as the upper and lower boundaries of the lower soft-clipping area. These boundaries can be adjusted by using the mouse. In addition, you can change the curvature of the soft clipping area by adjusting the node in the middle of the area (a small circle) with the mouse.

Context menu

The context menu is available by right - clicking on any area of the component.

 

component_hdrsoftclipper_contextmenu1_ENG

"Soft clipping" group

 

"Use high soft clipping" - enable / disable soft clipping if the color channel exceeds the upper limit of the LDR range.

"Use low soft clipping" - enable / disable soft clipping if the color channel exceeds the lower limit of the LDR range.

 

"Options" group

 

"Affect clipped only" - enable / disable the mode of influence only on the areas of color space, near which the colors actually went beyond the color gamut. This mode allows you to eliminate unnecessary impact on colors that do not go beyond the color gamut and should not be subjected to soft-clipping.

"Dispersion" - the value of the spread of the impact on all other areas of the color space when the "clipping areas Only"option is enabled.

Parameters inside the component node

Component node

component_hdrsoftclipper_nonvisual

 

There are no parameters inside the node.

 

 

Click toggle to expand/collapse hidden blockInput ports

Port name

Port type

Description

smart

boolean

Control the "Affect clipped only" option.

dispersion

weight

Control the amount of "Dispersion" when the "Affect clipped only" option is enabled. It can take values from 0 to 1.

clip high

boolean

Enable / disable soft clipping if the color channel exceeds the upper limit of the LDR range. Corresponds to the "Use high soft-clipping" option of the visual context menu.

clip low

boolean

Enable / disable soft clipping if the color channel exceeds the lower limit of the LDR range. Corresponds to the "Use low soft-clipping" option of the context menu of the visual part.

Standard ports are not listed here because these ports and their functions are equal for all components (see " Standard ports").

 

Click toggle to expand/collapse hidden blockOutput ports

The component does not have special ports. Standard ports are not listed here because these ports and their functions are equal for all components (see " Standard ports").

 

 


See also

Components