I/O
This module offers tools to import, export, and preprocess device layouts in multiple formats for nanofabrication prediction tasks.
load_device_img
load_device_img(path, img_length_nm=None)
Load, process and scale device image from file for prediction.
This function reads an image file, scales it according to the provided image length in nanometers, and performs preprocessing tasks such as binarization, preparing it for prediction.
Parameters
- Name
path- Type
- str
- Description
Path to the device image file.
- Name
img_length_nm- Type
- int, optional
- Description
Desired length of the device image in nanometers for scaling. If not provided, the length of the original image is used.
Returns
- Name
device- Type
- np.ndarray
- Description
A 2D numpy array representing the preprocessed and scaled device, ready for prediction.
load_device_gds
load_device_gds(path, cell_name, coords=None)
Load and process a device layout from a GDSII file.
This function reads a device layout from a GDSII file, performs necessary preprocessing tasks such as scaling and padding, and prepares it for prediction. Only the first layer (silicon) is loaded.
Parameters
- Name
path- Type
- str
- Description
Path to the GDSII layout file.
- Name
cell_name- Type
- str
- Description
Name of the GDSII cell to be loaded.
- Name
coords- Type
- List[List[int]], optional
- Description
A list of coordinates [[xmin, ymin], [xmax, ymax]] in nm, defining the region of the cell to be loaded. If None, the entire cell is loaded.
Returns
- Name
device- Type
- np.ndarray
- Description
A 2D numpy array representing the preprocessed device layout, ready for prediction.
device_to_cell
device_to_cell(device, cell_name, library, resolution=1.0, layer=(1, 0), approximation_mode=2)
Converts a device layout to a gdstk cell for GDSII export.
This function creates a cell that represents a device layout. The created cell is ready to be exported as a GDSII file.
Parameters
- Name
device- Type
- np.ndarray
- Description
A 2D numpy array representing the device layout.
- Name
cell_name- Type
- str
- Description
Name for the new cell.
- Name
library- Type
- gdstk.Library
- Description
Library to which the cell will be added.
- Name
resolution- Type
- float, optional
- Description
The resolution of the device in pixels per nm. Default is 1.0.
- Name
layer- Type
- Tuple[int, int], optional
- Description
A tuple specifying the layer to be exported. Default is (1, 0).
- Name
approximation_mode- Type
- int, optional
- Description
The approximation method to be used for finding contours. Possible values are 1, 2, 3, and 4. Larger values mean more approximation. Default is 2.
Returns
- Name
cell- Type
- gdstk.Cell
- Description
The newly created cell containing the device layout.