141ab53cc37dce728802803747584fc0fb82863b,examples/FasterRCNN/data.py,,get_all_anchors,#,57

Before Change

    // Many rounding happens inside the anchor code anyway
    // assert np.all(field_of_anchors == field_of_anchors.astype("int32"))
    field_of_anchors = field_of_anchors.astype("float32")
    field_of_anchors[:, :, :, [2, 3]] += 1
    return field_of_anchors


@memoized

After Change

    
    // Generates a NAx4 matrix of anchor boxes in (x1, y1, x2, y2) format. Anchors
    // are centered on 0, have sqrt areas equal to the specified sizes, and aspect ratios as given.
    anchors = []
    for sz in sizes:
        for ratio in ratios:
            w = np.sqrt(sz * sz / ratio)
            h = ratio * w
            anchors.append([-w, -h, w, h])
    cell_anchors = np.asarray(anchors) * 0.5

    field_size = int(np.ceil(max_size / stride))
    shifts = (np.arange(0, field_size) * stride).astype("float32")
    shift_x, shift_y = np.meshgrid(shifts, shifts)

Instances