run test, but do not get predicted png

[rock4you]

./tools/dist_test.sh configs/pspnet/pspnet_r50-d8_512x1024_40k_cityscapes.py
checkpoints/pspnet_r50-d8_512x1024_40k_cityscapes_20200605_003338-2966598c.pth
4 --format-only --eval-options "imgfile_prefix=./pspnet_test_results"

do not get the dir and the png

[dywu98]

same issure！

[ganyz]

me too

[ganyz]

me too

I understand, in tools/test.py

if args.format_only:
dataset.format_results(outputs, **kwargs)

the cityscape dataset has achieved the function format_results. （see the mmseg/datasets/cityscapes.py)
but the ade20k dataset class hasn't achieved the format_results. ( None in mmseg/datasets/ade.py)
So you have to write the codes yourself for ade dataset.

[xvjiarui]

Fixed in #544

[ganyz]

Fixed in #544

Thank you!
In addition, I have a question in the new 'ade.py'

       if len(result.shape) == 2:
            # print(result.shape)
            png_filename = osp.join(imgfile_prefix, f'{basename}.png')

            result = result + 1

            output = Image.fromarray(result.astype(np.uint8))
            output.save(png_filename)
            result_files.append(png_filename)

Why the result should add 1 ?
@xvjiarui Thank you! :>

[clownrat6]

Fixed in #544

Thank you!
In addition, I have a question in the new 'ade.py'

       if len(result.shape) == 2:
            # print(result.shape)
            png_filename = osp.join(imgfile_prefix, f'{basename}.png')

            result = result + 1

            output = Image.fromarray(result.astype(np.uint8))
            output.save(png_filename)
            result_files.append(png_filename)

Why the result should add 1 ?
@xvjiarui Thank you! :>

When training, we set reduce_zero_label=True. So, the label value range is from 0-149. But the label value range of test set if from 0-150. So, we add 1.

[clownrat6]

If there aren't any other problems. I will close this issue.