Working with dicom image

[eri820503]

Hi,

I want to try my dicom image(mammogram) to the model. But I can't find the procedure to transfer dicom image to png file.
I try some procedure to produce the png file:
First, I load dicom image as an array and use Histogram Equalization algorithm(in open cv) to make the contrast as expected.
Then, I save the array as png file with int32 byte.
Finally, I run your code without any error, but I'm not sure the result is correct or not?

Thanks for your contribution!

[Jungkyu (JP) Park]

The way we save png files from dicom images is as shown in the README file:

import png
import pydicom

def save_dicom_image_as_png(dicom_filename, png_filename, bitdepth=12):
    """
    Save 12-bit mammogram from dicom as rescaled 16-bit png file.
    :param dicom_filename: path to input dicom file.
    :param png_filename: path to output png file.
    :param bitdepth: bit depth of the input image. Set it to 12 for 12-bit mammograms.
    """
    image = pydicom.read_file(dicom_filename).pixel_array
    with open(png_filename, 'wb') as f:
        writer = png.Writer(height=image.shape[0], width=image.shape[1], bitdepth=bitdepth, greyscale=True)
        writer.write(f, image.tolist())