Reading small QR Code from a image using JSQR
I'm using JSQR library in ReactJS project to read QR code from image (jpg/png). Everything works fine but when QR code size is slightly small (not much, check the attached image), it fails several times.
If I upload only cropped area of QR code, it reads it.
Current work flow of website: It takes QR code image and convert it into ImageData using canvas and then pass that ImageData along with dimensions to JSQR (const code = jsQR(imageData, width, height);).
How I can improve it? Is their any way to auto-detect QR code location in image to improve scanning?
I found a solution for this. I'm posting it here for anyone facing similar issue.
It worked with a fork of jsQR libray jsQR-es6 (link). I think its a improved version of jsQR with es6 support.
- Keep numbers which appear in both columns, in J lang
- Differentiation in J
- How to reshape an array with an arbitrary size in one dimension?
- Why is Insert (fold) right associative
- Write 4 : 'x&{.&.;: y' tacitly
- Alignment issue when printing formatted prime numbers in J language
- How can I define a verb in J that applies a different verb alternately to each atom in a list?
- How to get user input in the J programming language
- How to unbox a list of boxed lists of differing lengths in J?
- How can I fix 'noun result was required' error in J?
- In j, how can I define a verb locally in one scope and pass it to a defined adverb?
- Convert boxed array to normal array?
- Read column of CSV file as array
- Replace atom in array of strings
- What does the dyad `=` do to boxed strings?
- Index of minimum element using J
- How can I take the outer product of string vectors in J?
- Building an array of verbs in J
- Reading in multidigit command line parameter
- Amend with bond to new data shows unexpected behaviour
- How to turn a table or matrix into a (flat) list in J
- How to run dissect in J?
- How to define selection using index function in J
- How to exit the J console?
- Find 4-neighbors using J
- Writing custom verbs in J
- How do I negate a selector in J lang?
- How to use arbitrary selector in interchange in J lang?
- different result once square root is added inside tacit
- Sum of arrays with repeated indices