PNG Process

pngencode

pngencode(img: np.ndarray, compression: int = 1) -> Union[bytes, None]

• Description: Encode a NumPy image array into a byte string in PNG format.

• Parameters:

  • img (np.ndarray): The image array to be encoded.
  • compression (int): Compression level, ranging from 0 to 9. 0 means no compression, 9 means highest compression. Default is 1.

• Returns

  • bytes: The encoded byte string in PNG format.

• Example

  import numpy as np
  import docsaidkit as D
  
  img_array = np.random.rand(100, 100, 3) * 255
  encoded_bytes = D.pngencode(img_array, compression=9)

pngdecode

pngdecode(byte_: bytes) -> Union[np.ndarray, None]

• Description: Decode a byte string in PNG format into a NumPy image array.

• Parameters:

  • byte_ (bytes): The byte string in PNG format to be decoded.

• Returns

  • np.ndarray: The decoded image array.

• Example

  decoded_img = D.pngdecode(encoded_bytes)