qr_scan_js_array: Scan a pixel array for QR codes with the JS engine.
In brianwdavis/quadrangle: Wrangle QR Codes Out of Images
qr_scan_js_array R Documentation
Scan a pixel array for QR codes with the JS engine.
Description
This is the wrapper for the QR code scanner in the jsQR library. It
converts an array of pixels (usually from image_data) into the
appropriate JS object and calls jsQR to scan it. The first dimension
should length-4 for RGBA values (can be double 0-1, integer 0-255, or raw
0x00-0xff), and the other dimensions should be width and height.
Usage
qr_scan_js_array(arr, engine = NULL)
Arguments
arr
A 3D array of types raw, double, or integer.
engine
An initialized V8 context, see qr_v8_init.
Value
A list with metadata about any identified QR code.
brianwdavis/quadrangle documentation built on Feb. 27, 2023, 6:36 p.m.
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| qr_scan_js_array | R Documentation |
Scan a pixel array for QR codes with the JS engine.
Description
This is the wrapper for the QR code scanner in the jsQR library. It
converts an array of pixels (usually from image_data) into the
appropriate JS object and calls jsQR to scan it. The first dimension
should length-4 for RGBA values (can be double 0-1, integer 0-255, or raw
0x00-0xff), and the other dimensions should be width and height.
Usage
qr_scan_js_array(arr, engine = NULL)
Arguments
arr |
A 3D array of types raw, double, or integer. |
engine |
An initialized V8 context, see |
Value
A list with metadata about any identified QR code.
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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