[Scilab-users] IPCV upscaling of image

[P M]

Dear Claus,

the example did not include saving the image as a file.

Best guesses:
- use imwrite
- use one of the xs2...-functions (e.g.: xs2bmp)

BR
Philipp


Am Mo., 21. Dez. 2020 um 09:20 Uhr schrieb Claus Futtrup <cfuttrup at gmail.com
>:

> Hi Philipp
>
> I see, thank you for explaining it to me. I also see that the upscale is
> not 2x2 = 4, but it is 4x4 so the upscaled image is huge. The output file
> is saved - I believe - in wherever your Scilab file browser is currently
> active.
>
> Best regards,
> Claus
>
> On 20-12-2020 22:55, P M wrote:
>
> Dear Claus,
>
> you need to feed a list into imsuperres()....not directly the image.
> Following should work.
>
> imgList = list();imgList(1) = imread('path_to_image');imgOut  = imsuperres(imgList);figure();imshow(imgList(1));figure();imshow(imgOut);
> BR
> Philipp
>
>
> Am So., 20. Dez. 2020 um 19:42 Uhr schrieb Claus Futtrup <
> cfuttrup at gmail.com>:
>
>> Hi there
>>
>> I have a 4K picture, which I thought I'll try to upscale with the
>> imsuperres in the IPCV toolbox. The code simply looks like this:
>>
>> imagefile = 'D:\Userdata\Claus\Pictures\Think_Global_4K.png';
>> im = imread(imagefile);
>> imout  = imsuperres(im);
>>
>> The file is read and I get the following response: Unsigned Integer 8
>> bits (2160 x 3840). Then Scilab crashes. I'm running Scilab 6.1.0 (the
>> original release) on Windows 10 - in a MS Windows dialog box I get:
>>
>>  >Scilab 6.1.0 (Desktop) has stopped working
>>
>>  >A problem caused the program to stop working correctly. Windows will
>> close the program and notify you if a solution is available.
>>
>> I am not sure that I've understood how to use imsuperres correctly. I
>> see in the _params that rfactor = 4 is the default, so I was expecting
>> the image to be scaled by a factor 4 (maybe that's 2 x 2 = I get an 8K
>> image = 4320 x 7680 pixels). The way I understand the documentation, I
>> don't need to run imsuperres_params if I'm satisified with the defaults.
>>
>> Kind regards,
>>
>> Claus
>>
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