Method: PDFium::Image#as_science

Defined in:
ext/pdfium_ext/image.cc

#as_science ⇒ ImageScience instance

Converts to an ImageScience bitmap and returns it. The ImageScience (github.com/seattlerb/image_science) library must be installed and required before calling this method or a NameError: uninitialized constant ImageScience exception will be raised.

Example

pdf = PDFium::Document.new( "test.pdf" )
page = pdf.pages.first
page.images.each do | image |
    image.as_science.cropped_thumbnail 100 do |thumb|
        thumb.save "image-#{image.index}-cropped.png"
    end
end

Returns:

  • (ImageScience instance) 


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# File 'ext/pdfium_ext/image.cc', line 207

VALUE
image_as_science(VALUE self){
    VALUE RBImageScience = rb_const_get(rb_cObject, rb_intern("ImageScience"));
    FIBITMAP *image = render_to_bitmap(self, FIF_BMP);

    VALUE instance = Data_Wrap_Struct(RBImageScience, NULL, NULL, image);
    rb_iv_set(instance, "@file_type", INT2FIX(FIF_BMP));
    return instance;
}