CTC greedy (best path) decoder.

convert text-label into text-index.

restore text boxes from score map and geo map

first resize the tcl_map, tvo_map and tbo_map to the input_size, then restore the polys

Estimate sample points number.

expand poly along width.

expand poly along width.

expand poly along width.

f_direction: h x w x 2 pos_list: [[y, x], [y, x], [y, x] ...]

Decoding predictions of FCENet to instances. Args: preds (list(Tensor)): The head output tensors. fourier_degree (int

Inverse Fourier transform Args: fourier_coeff (ndarray): Fourier coefficients shaped (n, 2k+1), with n and k bein

return center point and end point of TCL instance; filter with the char maps;

return center point and end point of TCL instance; filter with the char maps;

return center point and end point of TCL instance; filter with the char maps;

Warp all the function together.

Remove duplicate and get pos idxs of keep items. The value of keep_blank should be [None, 95].

Remove duplicate and get pos idxs of keep items. The value of keep_blank should be [None, 95].

Args: box_scores (N, 5): boxes in corner-form and probabilities. iou_threshold: intersection over union threshold. top_k:

gather_info: [[x, y], [x, y] ...] logits_map: H x W X (n_chars + 1)

Return intersection-over-union (Jaccard index) of boxes. Args: boxes0 (N, 4): ground truth boxes. boxes1 (N or 1, 4): predicted bo

Translates a PDF or all PDFs in a directory. Parameters ---------- args : argparse.Namespace Arguments passed to the script.

Transfer vertical point_pairs into poly point in clockwise.

Transfer vertical point_pairs into poly point in clockwise.

Transfer vertical point_pairs into poly point in clockwise.

Calculate the IOU between two polygons. Args: poly_det (Polygon): A polygon predicted by detector. poly_gt (Polygon): A gt polygo

Calculate the union area between two polygon. Args: poly_det (Polygon): A polygon predicted by detector. poly_gt (Polygon): A gt

_bitmap: single map with shape (1, H, W), whose values are binarized as {0, 1}

compute area of a quad.

reset

Rescale boundaries via scale_factor. Args: boundaries (list[list[float]]): The boundary list. Each boundary with size

Rescale boundaries via scale_factor. Args: boundaries (list[list[float]]): The boundary list. Each boundary with size

resize image to a size multiple of max_stride which is required by the network :param im: the resized image :param max_side_l

resize image to a size multiple of 32 which is required by the network args: img(array): array with shape [h, w, c]

resize img and limit the longest side of the image to input_size

Restore quad.

Restore rectangle from quadrangle.

logits: N x d

logits: N x d

f_direction: h x w x 2 pos_list: [[y, x], [y, x], [y, x] ...] binary_tcl_map: h x w