Requested texture size [0x0] is invalid. error when i am loading image in browser
Question
Tensorflow.js error in browser while calling predict function
I'm using Node.js to run the webapp. This is my scripts I have included and I'm running Node.js in Chrome and not able to solve the error.
This project has 7 classes as output that is dense layer in output of shape 1x7.
https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js
https://cdn.jsdelivr.net/npm/@tensorflow/tfjs@1.0.0/dist/tf.min.js
https://code.jquery.com/jquery-3.3.1.slim.min.js
This is my JavaScript file.
$(document).on('change', '#file', function() {
let reader = new FileReader();
reader.onload= function(){
let dataUrl = reader.result;
$('#selected-image').attr('src',dataUrl);
$('#type1-predict').empty();
$('#type2-predict').empty();
$('#type3-predict').empty();
$('#type4-predict').empty();
$('#type5-predict').empty();
$('#type6-predict').empty();
$('#type7-predict').empty();
}
let file = $('#file').prop('files')[0];
reader.readAsDataURL(file)
});
const CANCER_CLASSES = {
0:"Actinic Keratoses",
1:"Basal cell carcinoma",
2:"Benign keratosis",
3:"Dermatofibroma",
4:"Melanoma",
5:"Melanocytic nevi",
6:"Vascular skin",
}
let model;
(async function(){
model= await tf.loadLayersModel('http://localhost:81/model/model.json');
$('#pro').hide()
})();
$(document).on('click', '#predict-button', async function() {
let image = $('#selected-image').get(0);
let tensor =
tf.browser.fromPixels(image)
.resizeNearestNeighbor([224,224])
.toFloat()
.expandDims();
let prediction = await model.predict(tensor).data();
let top3 = Array.from(prediction)
.map(function(p,i){
return {
probab: p,
classname:CANCER_CLASSES[i]
};
}).sort(function(a,b){
return b.probab-a.probab;
}).slice(0,4);
$("#type1-predict").empty();
top3.forEach(function(p){
$('#type1-predict').append(`<li>${p.classname}:
${p.probab.tpFixed(6)}
</li>`);
});
});
This is a snippet of the HTML file
<body>
<div id="pro" class="progress progress-bar progress-bar-striped progress-
bar-animated"></div>
<input type="file" id="image-selector">
<button id="predict-button">Predict</button>
<p style="font-weight:bold">Presentation</p>
<p>Actinic Keratoses : <span id="type1-predict"></span></p>
<p>Basal cell carcinoma: <span id="type2-predict"></span></p>
<p>Benign keratosis: <span id="type3-predict"></span></p>
<p>Dermatofibroma: <span id="type4-predict"></span></p>
<p>Melanoma: <span id="type5-predict"></span></p>
<p>Melanocytic nevi : <span id="type6-predict"></span></p>
<p>Vascular skin: <span id="type7-predict"></span></p>
<img id="selected-image" src="">
Could you help me resolve the following error:
webgl_util.ts:203 Uncaught (in promise) Error: Requested texture size
[0x0] is invalid.
at Fr (webgl_util.ts:203)
at oi (gpgpu_util.ts:126)
at ui (gpgpu_util.ts:173)
at t.createUnsignedBytesMatrixTexture (gpgpu_context.ts:134)
at t.acquireTexture (texture_manager.ts:71)
at t.acquireTexture (backend_webgl.ts:2472)
at t.uploadToGPU (backend_webgl.ts:2407)
at t.getTexture (backend_webgl.ts:566)
at t.fromPixels (backend_webgl.ts:254)
at t.fromPixels (engine.ts:599)
1 answers
solution1
5 2019-08-26 17:37:15
Problem
When Tensorflow.js tries to transform your image into a tensor via tf.browser.fromPixels , it reads the width and height from the DOM element. As these values are not set in your case, you receive an error.
Solution
You have to give the img tag a width and height attribute, so that Tensorflow.js knows the size of your image:
<img id="selected-image" src="" width="..." height="...">
There is currently an open issue in the repository describing this problem. This might be fixed in the future by providing a better error message.
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.