Struct Opt

pub struct Opt {
    pub threshold: f32,
    pub dpi: i32,
    pub border: u32,
    pub output: Option<PathBuf>,
    pub tessdata_dir: Option<String>,
    pub lang: String,
    pub config: Vec<(Variable, String)>,
    pub input: PathBuf,
    pub dump: bool,
    pub dump_raw: bool,
}

Handle application parameter from cli with Clap.

Fields

threshold: f32

Threshold for subtitle image binarization.

Must be between 0.0 and 1.0. Only pixels with luminance above the threshold will be considered text pixels for OCR.

dpi: i32

DPI of subtitle images.

This setting doesn’t strictly make sense for DVD subtitles, but it can influence Tesseract’s output.

border: u32

Border in pixels to surround the each subtitle image for OCR.

This can have subtle effects on the quality of the OCR.

output: Option<PathBuf>

Output subtitle file; stdout if not present.

tessdata_dir: Option<String>

Path to Tesseract’s tessdata directory.

lang: String

The Tesseract language(s) to use for OCR.

config: Vec<(Variable, String)>

Set values for config variables.

This works like the tesseract command’s -c argument. One particularly useful option is tessedit_char_blacklist=|\/_~` or similar, to prevent the OCR from misidentifying characters as symbols rarely used in subtitles.

input: PathBuf

Set the path of the file to process.

dump: bool

Dump processed subtitle images into the working directory as PNG files.

dump_raw: bool

Dump raw subtitle images into the working directory as PNG files.

Trait Implementations

impl Args for Opt

fn group_id() -> Option<Id>

Report the ArgGroup::id for this set of arguments

fn augment_args<'b>(__clap_app: Command) -> Command

Append to Command so it can instantiate Self via FromArgMatches::from_arg_matches_mut

fn augment_args_for_update<'b>(__clap_app: Command) -> Command

Append to Command so it can instantiate self via FromArgMatches::update_from_arg_matches_mut

impl CommandFactory for Opt

fn command<'b>() -> Command

Build a Command that can instantiate Self.

fn command_for_update<'b>() -> Command

Build a Command that can update self.

impl Debug for Opt

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl FromArgMatches for Opt

fn from_arg_matches(__clap_arg_matches: &ArgMatches) -> Result<Self, Error>

Instantiate Self from ArgMatches, parsing the arguments as needed.

fn from_arg_matches_mut( __clap_arg_matches: &mut ArgMatches, ) -> Result<Self, Error>

Instantiate Self from ArgMatches, parsing the arguments as needed.

fn update_from_arg_matches( &mut self, __clap_arg_matches: &ArgMatches, ) -> Result<(), Error>

Assign values from ArgMatches to self.

fn update_from_arg_matches_mut( &mut self, __clap_arg_matches: &mut ArgMatches, ) -> Result<(), Error>

Assign values from ArgMatches to self.

impl Parser for Opt

fn parse() -> Self

Parse from std::env::args_os(), exit on error.

fn try_parse() -> Result<Self, Error>

Parse from std::env::args_os(), return Err on error.

fn parse_from<I, T>(itr: I) -> Self

where I: IntoIterator<Item = T>, T: Into<OsString> + Clone,

Parse from iterator, exit on error.

fn try_parse_from<I, T>(itr: I) -> Result<Self, Error>

where I: IntoIterator<Item = T>, T: Into<OsString> + Clone,

Parse from iterator, return Err on error.

fn update_from<I, T>(&mut self, itr: I)

where I: IntoIterator<Item = T>, T: Into<OsString> + Clone,

Update from iterator, exit on error.

fn try_update_from<I, T>(&mut self, itr: I) -> Result<(), Error>

where I: IntoIterator<Item = T>, T: Into<OsString> + Clone,

Update from iterator, return Err on error.