dawsonia.image_preproc

Module Contents

Classes

Preprocessor

Functions

corr_rotate

rotate the image if necessary to align with the horizontal Parameters

Data

logger

API

dawsonia.image_preproc.logger

‘getLogger(…)’

class dawsonia.image_preproc.Preprocessor

disks: dict[int, numpy.typing.NDArray[numpy.uint8]]

‘field(…)’

square: dict[int, numpy.typing.NDArray[numpy.uint8]]

‘field(…)’

static _mask_x(size) → numpy.typing.NDArray[numpy.uint8]

static _mask_y(size) → numpy.typing.NDArray[numpy.uint8]

preprocess(size_tables: tuple[tuple[int, int], ...], preproc_cfg: dawsonia.typing.PreprocConfig, middle: int | None, image: numpy.typing.NDArray[numpy.int16]) → tuple[numpy.typing.NDArray[numpy.uint8], dawsonia.typing.TablePositions, dawsonia.typing.TableSizes]

Preprocess image and perform table detection

compute_ligne_filter(image_filter, mask_size=36)

Get lines of the table

compute_image_final(image_filter, ligne_filter)

Final image adjustment

dawsonia.image_preproc.corr_rotate(image: numpy.typing.NDArray, middle: int | None = None) → numpy.typing.NDArray[numpy.float32]

rotate the image if necessary to align with the horizontal Parameters

image : array 2D grey image of a page Returns

im : array 2D (bigger) image but alligned and with more white margins on the sides and in the middle