The area amongst the dark and lightweight areas might be altered While using the "Recovery based on luminance mask" slider.
The region from the central circle C serves to be a reference. Depending upon the diameter selected from the consumer, the system calculates the standard of the hue, chroma and luminance (when applying Denoise, the values are blurred marginally ahead of processing to decrease the influence of noise).
The scene-ailment values are calculated through the Cam16 algorithms in addition to a method Found upstream of Nearby Adjustments, just once the enter profile, the demosaicing, and the choice of the Doing work profile, all of that are in linear method.
“PQ-Peak luminance” interprets the value of "Peak luminance" utilised internally from the PQ operate. This price, which happens to be used internally for all HDR calculations upstream in the monitor, just isn't the same as the value which can be allotted to your HDR observe (when accessible).
The problem released by logarithmic conversion to compress the info (Log two) is that it's not linear.
Take note that for your blur operate, using a FFT provides a greater high-quality final result compared to approach utilised elsewhere in RawTherapee, and that is according to a number of approximations. For MultiScale Retinex it can be done (although not suggested) to alter the variable Fftwsigma=legitimate in RawTherapee’s “possibilities” file to “false”.
The dark and black areas of the mask will result in a combined graphic that is definitely as near as is possible to the initial.
Signify luminance, also known as "grey issue". This calculation is performed as explained from the paragraph underneath.
Try out "Scope (ΔE graphic mask)" in Settings: this slider acts to the mask and requires into consideration the deltaE of the mask when compared with the center on the RT-location.
Altering the dominant colour can be carried out by going the white stage in direction of the calculated shade dominant (grey stage about the diagram) by means of Refine hues (white-stage), or moved by modifying the values of Change x and Shift y.
It should be pointed out there are correctly only two selections for Dehaze & Retinex, Primary and Sophisticated (the Basic and Standard options are identical). Modifying the GUI to replicate this appears to be challenging at this stage. Hue, chroma, luminance references and the basic principle of your algorithm
The minimum amount sizing from the RT-spot for the CBDL and Wavelet Pyramid2 decomposition to operate is 32x32 pixels. There are actually workarounds including the utilization of transitions and deltaE to deal with defects more compact compared to spot.
4 sliders that permit you to alter the shadows and website highlights on the residual impression, with the opportunity of using unfavorable values.
A checkbox enabling the user to make a choice from linear method (appropriate for working on distinction) and logarithm method (more suitable for minimizing haze). It also can generate extra marked community contrast consequences with the expense of a rise in halos.