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Merge pull request #7363 from RawTherapee/ghstooltip

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Change tooltips TP_LOCALLAB_GHS_LP_TOOLTIP  TP_LOCALLAB_ GHS_HP_TOOTIP
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@ -3299,17 +3299,17 @@ TP_LOCALLAB_GHS_GHSDIAG;GHS Curve Visualization
TP_LOCALLAB_GHS_HLP;White point (WP linear)
TP_LOCALLAB_GHS_HLP_TOOLTIP;Sets the White point for a linear stretch of the image. Any pixel with value greater than the White point input will be clipped and the data lost.\n * Contrast gained by performing the linear stretch will be evenly distributed over the image, which will be brightened. Pixels with values greater than the White point will appear white and have a value of 1.0.\n * Setting this parameter to a value greater than 1 will extend the dynamic range at the high end.\n * The 'Highlight reconstruction' method has a very strong impact on the White-point value.\n\n * It is recommended to adjust this slider before the main GHS sliders to avoid clipping data. A very low Stretch factor (D) value (0.001 by default) is recommended for performing this adjustment.\n * The label 'Clipped pixel count - Shadows:x Highlights=y' shows you the number of pixels that would be clipped without adjusting the two sliders.\n * The label Pixel values - Darkest:w Lightest:z shows you the minimum and maximum values in the range [0, 1].\n\n * In ‘Inverse GHS’ mode the behavior is reversed and there are possible interactions with the Black point.
TP_LOCALLAB_GHS_HP;Protect highlights (HP)
TP_LOCALLAB_GHS_HP_TOOLTIP;Sets a value above which the stretch is modified to preserve contrast in the highlights. This is done by performing a linear stretch of the data above the 'HP' level by reserving contrast from the rest of the image. Moving the HP level towards the current setting of SP increases both the scope (range) and the amount of this contrast reservation. The net effect is to push the overall stretch to lower brightness levels while keeping the contrast and definition in the highlights. The amount of contrast reserved for the highlights is such that the continuity of the stretch is preserved.\n * This parameter must be at most 1 and no less than the Symmetry point.\n * The adjuster will automatically limits the maximum value to the Symmetry Point (SP).\n\n * Using Highlight attenuation helps to reinforce the action of Protect highlights (HP).
TP_LOCALLAB_GHS_HP_TOOLTIP;Sets a value above which the stretch is modified to preserve contrast in the highlights. This is done by performing a linear stretch of the data above the 'HP' level by reserving contrast from the rest of the image. Moving the HP level towards the current setting of SP increases both the scope (range) and the amount of this contrast reservation. The net effect is to push the overall stretch to lower brightness levels while keeping the contrast and definition in the highlights. The amount of contrast reserved for the highlights is such that the continuity of the stretch is preserved.\n * This parameter must be at most 1 and no less than the Symmetry point.\n * The adjuster will automatically limit the minimum value based on the Symmetry Point (SP).\n\n * Using Highlight attenuation helps to reinforce the action of Protect highlights (HP).
TP_LOCALLAB_GHS_INV;Inverse GHS
TP_LOCALLAB_GHS_INV_TOOLTIP;The inverse GHS is useful for working in negative space. It adds contrast on the far right and left of the histogram, brightening the deep shadows, darkening the bright highlights, and squeezing the histogram to the middle.\n\n * The Generalized Hyperbolic inverse transformation allows you to recover your original image, subject to mathematical precision, but you can use it for other purposes.\n\n * If the White point and Black point were changed in normal mode, they will likely need to be readjusted. The White point often needs to be readjusted lower. There is interaction between the two settings.
TP_LOCALLAB_GHS_LC;Value (LC)
TP_LOCALLAB_GHS_LC_FRAME;Stretch Regularization & Midtones
TP_LOCALLAB_GHS_LC_TOOLTIP;Slightly increases local contrast that was weakened by stretching.\nCan be completed by other tools specific to local contrast such as wavelets.\n\nWhen Stretch factor is 0.002 or less, Stretch Regularization & Midtones is disabled.
TP_LOCALLAB_GHS_LP;Protect shadows (LP)
TP_LOCALLAB_GHS_LP_TOOLTIP;Sets a value below which the stretch is modified to preserve contrast in the shadows/lowlights. This is done by performing a linear stretch of the data below the 'LP' level by reserving contrast from the rest of the image. Moving the LP level towards the current setting of SP changes both the scope (range) and the amount of this contrast reservation. The net effect is to push the overall stretch to higher brightness levels while keeping the contrast and definition in the background. The amount of contrast reserved for the lowlights is such that the continuity of the stretch is preserved.\n * This parameter must be at least 0 and no greater than the Symmetry point.\n * The adjuster will automatically limit the maximum value to the Symmetry Point (SP).\n\n * Using Black point - negative values - when possible, allows to change both the value of Symmetry point (SP) and the action of Protect shadows (LP).
TP_LOCALLAB_GHS_LP_TOOLTIP;Sets a value below which the stretch is modified to preserve contrast in the shadows/lowlights. This is done by performing a linear stretch of the data below the 'LP' level by reserving contrast from the rest of the image. Moving the LP level towards the current setting of SP changes both the scope (range) and the amount of this contrast reservation. The net effect is to push the overall stretch to higher brightness levels while keeping the contrast and definition in the background. The amount of contrast reserved for the lowlights is such that the continuity of the stretch is preserved.\n * This parameter must be at least 0 and no greater than the Symmetry point.\n * The adjuster will automatically limit the maximum value based on the Symmetry Point (SP).\n\n * Using Black point - negative values - when possible, allows to change both the value of Symmetry point (SP) and the action of Protect shadows (LP).
TP_LOCALLAB_GHS_METHOD_TOOLTIP;The Generalized Hyperbolic Stretch (GHS) process allows you to transform the values of pixels in your image to improve the representation of the underlying data for human visualisation.\nThe generalized hyperbolic equations used in the GHS process have five main parameters. This allows significant flexibility in designing the "shape" of the transformation.\n\nTypical uses of pixel intensity transformations include:\n * Initial stretch of pixel data from linear state.\n * Addition of contrast to key areas of the image.\n * Overall brightening or darkening of the image.\n * Adjustment of the image dynamic range.\n * Adjustment of pixel data in RGB Luminance, RGB standard, Luminance - chromaticity (Lab/Lch), Luminance (HSL), Saturation (HSL), or Hue (HSL) channels.\n\n * For a better results, you can proceed in several steps, creating 2 or more RT-spots each superimposed with the GHS tool. For each of the RT-Spots, the Symmetry point (SP) base value will be different. Use the histogram peak to position the SP value.\n * For example, you can start the system in RGB mode (1st Spot), then the 2nd Spot in RGB mode with a different SP, and the 3rd in Saturation or Hue mode.\n * You can mix RT-spots in 'Normal' mode and 'Inverse' mode to restore contrast balance.\n * Full Image allows you to limit the effect to specific colors based on the deltaE.
TP_LOCALLAB_GHS_MID;Midtones
TP_LOCALLAB_GHS_MID_TOOLTIP;Adjusts midtone balance after GHS transformation.\n Can be used to rebalance the midtones of the image after stretching.\n\nWhen Stretch factor is 0.002 or less, Stretch Regularization & Midtones is disabled
TP_LOCALLAB_GHS_MID_TOOLTIP;Adjusts midtone balance after GHS transformation.\nCan be used to rebalance the midtones of the image after stretching.\n\nWhen Stretch factor is 0.002 or less, Stretch Regularization & Midtones is disabled.
TP_LOCALLAB_GHS_MODECUR;GHS
TP_LOCALLAB_GHS_MODELIN;Linear
TP_LOCALLAB_GHS_SIMUL_TOOLTIP;Gives a representation of the GHS function.