Raster style - Enhance SLD and CSS parser to allow algorithm for contrast enhancement

[dsuren1]

Description

Needed improvements:

• The Contrast enhancement properties selection is incomplete. It see to work only with none inside the classification panel. eg: Normalize allow different algorithm with min and max value see RasterSymbolizer doc. Probably this task needs some updates on the style parsers CSS and SLD

• The additional algorithms supported by Normalize (StretchToMinimumMaximum, ClipToMinimumMaximum and ClipToZero) mentioned in RasterSymbolizer doc are not supported natively by the geostyler-sld-parser and geostyler-style.

Unfortunately there aren't any open issue on Raster symbolizer or customization of normalize contrast enhancement in the geostyler library. So we might need to create a feature request or a issue proposal to geostyler library for the support of customize Normalize Contrast Enhancement. Similiary the enhancement has to be made on geostyler-geocss-parser for css styler

Issue ref: https://github.com/geosolutions-it/mapstore2/issues/6810

[dsuren1]

Tasks:

• Pending review: https://github.com/geosolutions-it/geostyler-style/pull/1

• Once merged, I will create two separate PR to https://github.com/geosolutions-it/geostyler-geocss-parser and https://github.com/geosolutions-it/geostyler-sld-parser to support the Normalize Contrast Enhancement vendor option.

• Following the above PRs merged, need to update the libraries in MS and create fields to support Vendor option (Algorithm, min and max value) fields to raster symbolizer

[tdipisa]

@allyoucanmap as soon as you can please review the PR here (see above comment of @dsuren1).

[allyoucanmap]

Note: the libraries we need to update and publish are:

• https://github.com/geosolutions-it/geostyler-style
• https://github.com/geosolutions-it/geostyler-sld-parser
• https://github.com/geosolutions-it/geostyler-geocss-parser