utils - Packages and tools for image preprocessing

Age	Commit message (Collapse)	Author
2019-10-08	Remove parts that have been moved elsewhere, and rename to rescribe.xyz/utils	Nick White
	bookpipeline is now at rescribe.xyz/bookpipeline preproc is now at rescribe.xyz/preproc integralimg is now at rescribe.xyz/preproc/integralimg
2019-10-02	gofmt	Nick White

2019-09-27	One more update of graph.go to correspond to new go-chart, and improve usage ↵	Nick White
	for wipe
2019-08-13	Switch ksizes to use by preprocmulti	Nick White

2019-06-25	Remove 0.6 binarisation threshold option from preprocmulti	Nick White

2019-06-25	Experimentally adjust wipe threshold according to binarisation level	Nick White

2019-06-03	Add option to disable wiping for preproc and preprocmulti	Nick White

2019-06-03	Add -m option to wipe to set minimum content area for wipe to proceed	Nick White
	If content is very light or sparse it may be better to not wipe at all than wipe almost all of the content leaving a small strip. This is done now by aborting the wipe if the detected content takes up less than the minimum % of the page (default is 30%).
2019-05-14	Basic cleanup of preprocmulti	Nick White

2019-05-14	gofmt	Nick White

2019-05-14	Add preprocmulti tool, that outputs multiple binarisation options quickly	Nick White

2019-05-13	Add preproc command, that binarises and preprocesses together	Nick White
	Surprisingly opening an image takes a significant amount of the total processing time, so this actually saves quite a bit of time in the grand scheme of things.
2019-05-13	Reorganise image manipulation to separate integral image parts	Nick White
	Also unify everything else under preproc/ Note that the UsefulImg interface should be used by the main functions, to simplify things, but this hasn't been done yet.
2019-05-13	Rename cleanup to wipe, and only export main function	Nick White

2019-05-13	Rename cleanup package to preproc, and add basic cmd version	Nick White