module Pdfimage:sig
..end
Extract Images.
type
pixel_layout =
| |
BPP1 |
| |
BPP8 |
| |
BPP24 |
| |
BPP48 |
type
t =
| |
JPEG of |
| |
JPEG2000 of |
| |
JBIG2 of |
| |
Raw of |
val get_image_24bpp : Pdf.t -> Pdf.pdfobject -> Pdf.pdfobject -> t
Given a pdf document, resources dictionary and a stream representing an image, return a triple : width, height, and a stream of (width * height * 3) bytes RGBRGB etc. In all instances, if JPEG or JPEG2000 or JBIG2 is the compression method, data is returned still encoded.
val get_image : Pdf.t -> Pdf.pdfobject -> Pdf.pdfobject -> t
Similarly, but if it's to be Raw, use the smallest pixel layout required to represent the data. Not implemented yet.
val get_image_raw_24bpp : Pdf.t -> Pdf.pdfobject -> Pdf.pdfobject -> t
Get the uncompressed image contents in 24bpp, decoding JPEG, JPEG2000 and JBIG2 as required. Not implemented yet.
val get_image_raw : Pdf.t -> Pdf.pdfobject -> Pdf.pdfobject -> t
Get the uncompressed image contents, decoding JPEG, JPEG2000 and JBIG2 as required. Not implemented yet.
val get_image_unprocessed_pixel : Pdf.t -> Pdf.pdfobject -> Pdf.pdfobject -> (int -> int array) option
Return a function which, when given an x and y coordinate, returns the pixel byte values prior to any decoding, i.e in the raw input image data before /Decode, /Index lookups and so on. Returns array of components as bytes.