saving options/flags do not work

@chrisc36 I was able to use the -f flag to show the detection results, but the saving options/flags do not work. Do you know why? Thanks!

> $ ./pdffigures -o pdf/tmp.pdf
No PDF file given!
Usage: figureextractor [flags]
--version
-v, --verbose
-m, --save-mistakes: If combined with -f,-o,-a additionally save/show figures that were detected but could not be extracted successfully
-s, --show-steps: Display image processing steps
-f, --show-final: Display pages with captions and images marked
-a, --save-final .png
-o, --save-figures : Save images of detected figures to prefix. Files are save to prefix-<(Table|Figure)>-.png
-c, --save-color-images : Save color images with a high resolution for figures and tables.Files are save to prefix-<(Table|Figure)>-c.png
-j, --save-json : Save json encoding of detected figures to prefix. Files are save to prefix.json
-r, --reverse: Go through pages in reverse order
-p, --page : Run only for the given page
-i, --text-as-image: Attempt to parse documents even if the document's text is encoded as part of an embedded image (usually caused by scanned documents that have been processed with OCR). These documents are not handeled well at the moment so precision is liable to be poor
-h, --help show usage

> $ ./pdffigures -a pdf/tmp.pdf
No PDF file given!
Usage: figureextractor [flags]
--version
-v, --verbose
-m, --save-mistakes: If combined with -f,-o,-a additionally save/show figures that were detected but could not be extracted successfully
-s, --show-steps: Display image processing steps
-f, --show-final: Display pages with captions and images marked
-a, --save-final .png
-o, --save-figures : Save images of detected figures to prefix. Files are save to prefix-<(Table|Figure)>-.png
-c, --save-color-images : Save color images with a high resolution for figures and tables.Files are save to prefix-<(Table|Figure)>-c.png
-j, --save-json : Save json encoding of detected figures to prefix. Files are save to prefix.json
-r, --reverse: Go through pages in reverse order
-p, --page : Run only for the given page
-i, --text-as-image: Attempt to parse documents even if the document's text is encoded as part of an embedded image (usually caused by scanned documents that have been processed with OCR). These documents are not handeled well at the moment so precision is liable to be poor
-h, --help show usage