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Try to improve QuaggaJS barcode scanning recognition accuracy (this now closes #362)

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This commit is contained in:
Bernd Bestel
2019-09-21 20:46:23 +02:00
parent fc2a37d3fc
commit 51e0154101
1 changed files with 24 additions and 11 deletions
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31
public/viewjs/components/barcodescanner.js
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@@ -2,6 +2,9 @@ Grocy.Components.BarcodeScanner = { };
Grocy.Components.BarcodeScanner.StartScanning = function() Grocy.Components.BarcodeScanner.StartScanning = function()
{ {
Grocy.Components.BarcodeScanner.DecodedCodesCount = 0;
Grocy.Components.BarcodeScanner.DecodedCodesErrorCount = 0;
Quagga.init({ Quagga.init({
inputStream: { inputStream: {
name: "Live", name: "Live",
@@ -35,15 +38,9 @@ Grocy.Components.BarcodeScanner.StartScanning = function()
frequency: 10, frequency: 10,
decoder: { decoder: {
readers: [ readers: [
"code_128_reader",
"ean_reader", "ean_reader",
"ean_8_reader", "ean_8_reader",
"code_39_reader", "code_128_reader"
"code_39_vin_reader",
"codabar_reader",
"upc_reader",
"upc_e_reader",
"i2of5_reader"
], ],
debug: { debug: {
showCanvas: true, showCanvas: true,
@@ -79,13 +76,29 @@ Grocy.Components.BarcodeScanner.StartScanning = function()
Grocy.Components.BarcodeScanner.StopScanning = function() Grocy.Components.BarcodeScanner.StopScanning = function()
{ {
Quagga.stop(); Quagga.stop();
Grocy.Components.BarcodeScanner.DecodedCodesCount = 0;
Grocy.Components.BarcodeScanner.DecodedCodesErrorCount = 0;
bootbox.hideAll(); bootbox.hideAll();
} }
Quagga.onDetected(function(result) Quagga.onDetected(function(result)
{
$.each(result.codeResult.decodedCodes, function(id, error)
{
if (error.error != undefined)
{
Grocy.Components.BarcodeScanner.DecodedCodesCount++;
Grocy.Components.BarcodeScanner.DecodedCodesErrorCount += parseFloat(error.error);
}
});
if (Grocy.Components.BarcodeScanner.DecodedCodesErrorCount / Grocy.Components.BarcodeScanner.DecodedCodesCount < 0.15)
{ {
Grocy.Components.BarcodeScanner.StopScanning(); Grocy.Components.BarcodeScanner.StopScanning();
$(document).trigger("Grocy.BarcodeScanned", [result.codeResult.code]); $(document).trigger("Grocy.BarcodeScanned", [result.codeResult.code]);
}
}); });
Quagga.onProcessed(function(result) Quagga.onProcessed(function(result)
@@ -103,13 +116,13 @@ Quagga.onProcessed(function(result)
return box !== result.box; return box !== result.box;
}).forEach(function(box) }).forEach(function(box)
{ {
Quagga.ImageDebug.drawPath(box, { x: 0, y: 1 }, drawingCtx, { color: "green", lineWidth: 4 }); Quagga.ImageDebug.drawPath(box, { x: 0, y: 1 }, drawingCtx, { color: "yellow", lineWidth: 4 });
}); });
} }
if (result.box) if (result.box)
{ {
Quagga.ImageDebug.drawPath(result.box, { x: 0, y: 1 }, drawingCtx, { color: "yellow", lineWidth: 4 }); Quagga.ImageDebug.drawPath(result.box, { x: 0, y: 1 }, drawingCtx, { color: "green", lineWidth: 4 });
} }
if (result.codeResult && result.codeResult.code) if (result.codeResult && result.codeResult.code)