pixAddGray: Pix Operations
In duncantl/Rtesseract: Interface to the tesseract OCR system

pixAddGray

R Documentation

Pix Operations

Description

This is one collection of functions useful for manipulating Pix-class objects.

Usage

pixAddGray(pix1, pix2, target = NULL)
pixInvert(pix, target = NULL)
pixCloseGray(pix, horiz, vert)
pixErodeGray(pix, horiz, vert)
pixConvertTo8(pix, colormap = FALSE)

Arguments

`pix`, `pix1`, `pix2`	a `Pix-class` object
`target`	either a `Pix-class` object or NULL. If a `Pix` is specified, this is used to store the answer. Otherwise, a new Pix is created and returned.
`colormap`	a logical value indicating whether to include or exclude the color map for the new image.
`horiz`	the width in pixels of the horizontal region for the operation
`vert`	the width in pixels of the vertical region for the operation

Value

These functions return a Pix-class object.

Author(s)

Duncan Temple Lang

References

http://tpgit.github.io/UnOfficialLeptDocs/

Examples

f = system.file("images", "SMITHBURN_1952_p3.png", package = "Rtesseract")
p1 = pixRead(f)
p2 = pixConvertTo8(p1)
p2 = deskew(p2)
p6 = Rtesseract:::findLines(p2, 51, 5, FALSE)
p = pixAddGray(p2, p6)
plot(p)

duncantl/Rtesseract documentation built on Sept. 8, 2024, 8:38 a.m.