PHP enables students to finish paper papers, then upload photos through mobile phones, and then automatically correct objective questions
.ask, are there any ideas or open source programs or off-the-shelf products for reference?
PHP enables students to finish paper papers, then upload photos through mobile phones, and then automatically correct objective questions
.ask, are there any ideas or open source programs or off-the-shelf products for reference?
I haven't done a shaping project, but it doesn't look difficult.
you can think of it as a large QR code, put a few marks in the corner of the test paper, and then the inside becomes the point of the QR code, and you can scan it out and score. In addition, answer cards have been around for at least a few decades, and mature solutions should not be difficult to find.
you.
I haven't looked for it yet, but I need some digital image processing
doesn't the homework help have this function?
this seems to be a mature solution for python
. The answer card routine
has a curve to save the nation for reference.
use OCR pictures to convert text, and then use PHP to deal with strings.
if you want to achieve this, you need to match the test paper with the way you answer it.
is more tedious, and there is a problem of recognition rate when the picture is converted to text.
has just checked that there is a third party that specializes in this: http://www.seewo.com/Case/ind.
consider using cloud services
such as iFLYTEK open platform cloud service products: printed character recognition
get the picture data content through the interface, and then use php to process the text processed by the interface
regularly match the students' answer results, and match the configured answers
in fact, the focus is on the accurate recognition of images and the conversion of image data into text data. You can look for relevant cloud services
php-ml find out.
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