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| <html> | |
| <head> | |
| <meta content="text/html;charset=utf-8" http-equiv="Content-Type" /> | |
| <title>Candle YOLOv8 Rust/WASM</title> | |
| </head> | |
| <body></body> | |
| </html> | |
| <html> | |
| <head> | |
| <meta charset="UTF-8" /> | |
| <meta name="viewport" content="width=device-width, initial-scale=1.0" /> | |
| <style> | |
| @import url("https://fonts.googleapis.com/css2?family=Source+Code+Pro:wght@200;300;400&family=Source+Sans+3:wght@100;200;300;400;500;600;700;800;900&display=swap"); | |
| html, | |
| body { | |
| font-family: "Source Sans 3", sans-serif; | |
| } | |
| code, | |
| output, | |
| select, | |
| pre { | |
| font-family: "Source Code Pro", monospace; | |
| } | |
| </style> | |
| <script src="https://cdn.tailwindcss.com"></script> | |
| <script | |
| src="https://cdn.jsdelivr.net/gh/huggingface/hub-js-utils/share-canvas.js" | |
| type="module" | |
| ></script> | |
| <script type="module"> | |
| const MODEL_BASEURL = | |
| "https://huggingface.co/lmz/candle-yolo-v8/resolve/main/"; | |
| const MODELS = { | |
| yolov8n: { | |
| model_size: "n", | |
| url: "yolov8n.safetensors", | |
| }, | |
| yolov8s: { | |
| model_size: "s", | |
| url: "yolov8s.safetensors", | |
| }, | |
| yolov8m: { | |
| model_size: "m", | |
| url: "yolov8m.safetensors", | |
| }, | |
| yolov8l: { | |
| model_size: "l", | |
| url: "yolov8l.safetensors", | |
| }, | |
| yolov8x: { | |
| model_size: "x", | |
| url: "yolov8x.safetensors", | |
| }, | |
| }; | |
| // init web worker | |
| const yoloWorker = new Worker("./yoloWorker.js", { type: "module" }); | |
| let hasImage = false; | |
| //add event listener to image examples | |
| document.querySelector("#image-select").addEventListener("click", (e) => { | |
| const target = e.target; | |
| if (target.nodeName === "IMG") { | |
| const href = target.src; | |
| drawImageCanvas(href); | |
| } | |
| }); | |
| //add event listener to file input | |
| document.querySelector("#file-upload").addEventListener("change", (e) => { | |
| const target = e.target; | |
| if (target.files.length > 0) { | |
| const href = URL.createObjectURL(target.files[0]); | |
| drawImageCanvas(href); | |
| } | |
| }); | |
| // add event listener to drop-area | |
| const dropArea = document.querySelector("#drop-area"); | |
| dropArea.addEventListener("dragenter", (e) => { | |
| e.preventDefault(); | |
| dropArea.classList.add("border-blue-700"); | |
| }); | |
| dropArea.addEventListener("dragleave", (e) => { | |
| e.preventDefault(); | |
| dropArea.classList.remove("border-blue-700"); | |
| }); | |
| dropArea.addEventListener("dragover", (e) => { | |
| e.preventDefault(); | |
| }); | |
| dropArea.addEventListener("drop", (e) => { | |
| e.preventDefault(); | |
| dropArea.classList.remove("border-blue-700"); | |
| const url = e.dataTransfer.getData("text/uri-list"); | |
| const files = e.dataTransfer.files; | |
| if (files.length > 0) { | |
| const href = URL.createObjectURL(files[0]); | |
| drawImageCanvas(href); | |
| } else if (url) { | |
| drawImageCanvas(url); | |
| } | |
| }); | |
| function drawImageCanvas(imgURL) { | |
| const canvas = document.querySelector("#canvas"); | |
| const canvasResult = document.querySelector("#canvas-result"); | |
| canvasResult | |
| .getContext("2d") | |
| .clearRect(0, 0, canvas.width, canvas.height); | |
| const ctx = canvas.getContext("2d"); | |
| ctx.clearRect(0, 0, canvas.width, canvas.height); | |
| document.querySelector("#share-btn").hidden = true; | |
| const img = new Image(); | |
| img.crossOrigin = "anonymous"; | |
| img.onload = () => { | |
| canvas.width = img.width; | |
| canvas.height = img.height; | |
| ctx.drawImage(img, 0, 0); | |
| canvas.parentElement.style.height = canvas.offsetHeight + "px"; | |
| hasImage = true; | |
| document.querySelector("#detect").disabled = false; | |
| }; | |
| img.src = imgURL; | |
| } | |
| async function classifyImage( | |
| imageURL, // URL of image to classify | |
| modelID, // ID of model to use | |
| modelURL, // URL to model file | |
| modelSize, // size of model | |
| confidence, // confidence threshold | |
| iou_threshold, // IoU threshold | |
| updateStatus // function receives status updates | |
| ) { | |
| return new Promise((resolve, reject) => { | |
| yoloWorker.postMessage({ | |
| imageURL, | |
| modelID, | |
| modelURL, | |
| modelSize, | |
| confidence, | |
| iou_threshold, | |
| }); | |
| yoloWorker.addEventListener("message", (event) => { | |
| if ("status" in event.data) { | |
| updateStatus(event.data.status); | |
| } | |
| if ("error" in event.data) { | |
| reject(new Error(event.data.error)); | |
| } | |
| if (event.data.status === "complete") { | |
| resolve(event.data); | |
| } | |
| }); | |
| }); | |
| } | |
| // add event listener to detect button | |
| document.querySelector("#detect").addEventListener("click", async () => { | |
| if (!hasImage) { | |
| return; | |
| } | |
| const modelID = document.querySelector("#model").value; | |
| const modelURL = MODEL_BASEURL + MODELS[modelID].url; | |
| const modelSize = MODELS[modelID].model_size; | |
| const confidence = parseFloat( | |
| document.querySelector("#confidence").value | |
| ); | |
| const iou_threshold = parseFloat( | |
| document.querySelector("#iou_threshold").value | |
| ); | |
| const canvasInput = document.querySelector("#canvas"); | |
| const canvas = document.querySelector("#canvas-result"); | |
| canvas.width = canvasInput.width; | |
| canvas.height = canvasInput.height; | |
| const scale = canvas.width / canvas.offsetWidth; | |
| const ctx = canvas.getContext("2d"); | |
| ctx.drawImage(canvasInput, 0, 0); | |
| const imageURL = canvas.toDataURL(); | |
| const results = await await classifyImage( | |
| imageURL, | |
| modelID, | |
| modelURL, | |
| modelSize, | |
| confidence, | |
| iou_threshold, | |
| updateStatus | |
| ); | |
| const { output } = results; | |
| ctx.lineWidth = 1 + 2 * scale; | |
| ctx.strokeStyle = "#3c8566"; | |
| ctx.fillStyle = "#0dff9a"; | |
| const fontSize = 14 * scale; | |
| ctx.font = `${fontSize}px sans-serif`; | |
| for (const [label, bbox] of output) { | |
| const [x, y, w, h] = [ | |
| bbox.xmin, | |
| bbox.ymin, | |
| bbox.xmax - bbox.xmin, | |
| bbox.ymax - bbox.ymin, | |
| ]; | |
| const confidence = bbox.confidence; | |
| const text = `${label} ${confidence.toFixed(2)}`; | |
| const width = ctx.measureText(text).width; | |
| ctx.fillStyle = "#3c8566"; | |
| ctx.fillRect(x - 2, y - fontSize, width + 4, fontSize); | |
| ctx.fillStyle = "#e3fff3"; | |
| ctx.strokeRect(x, y, w, h); | |
| ctx.fillText(text, x, y - 2); | |
| } | |
| }); | |
| function updateStatus(statusMessage) { | |
| const button = document.querySelector("#detect"); | |
| if (statusMessage === "detecting") { | |
| button.disabled = true; | |
| button.classList.add("bg-blue-700"); | |
| button.classList.remove("bg-blue-950"); | |
| button.textContent = "Detecting..."; | |
| } else if (statusMessage === "complete") { | |
| button.disabled = false; | |
| button.classList.add("bg-blue-950"); | |
| button.classList.remove("bg-blue-700"); | |
| button.textContent = "Detect Objects"; | |
| document.querySelector("#share-btn").hidden = false; | |
| } | |
| } | |
| document.querySelector("#share-btn").addEventListener("click", () => { | |
| shareToCommunity( | |
| "lmz/candle-yolo", | |
| "Candle + YOLOv8", | |
| "YOLOv8 with [Candle](https://github.com/huggingface/candle)", | |
| "canvas-result", | |
| "share-btn" | |
| ); | |
| }); | |
| </script> | |
| </head> | |
| <body class="container max-w-4xl mx-auto p-4"> | |
| <main class="grid grid-cols-1 gap-8"> | |
| <div> | |
| <h1 class="text-5xl font-bold">Candle YOLOv8</h1> | |
| <h2 class="text-2xl font-bold">Rust/WASM Demo</h2> | |
| <p class="max-w-lg"> | |
| Running an object detection model in the browser using rust/wasm with | |
| an image. This demo uses the | |
| <a | |
| href="https://huggingface.co/lmz/candle-yolo-v8" | |
| target="_blank" | |
| class="underline hover:text-blue-500 hover:no-underline" | |
| > | |
| Candle YOLOv8 | |
| </a> | |
| models to detect objects in images and WASM runtime built with | |
| <a | |
| href="https://github.com/huggingface/candle/" | |
| target="_blank" | |
| class="underline hover:text-blue-500 hover:no-underline" | |
| >Candle | |
| </a> | |
| </p> | |
| </div> | |
| <div> | |
| <label for="model" class="font-medium">Models Options: </label> | |
| <select | |
| id="model" | |
| class="border-2 border-gray-500 rounded-md font-light" | |
| > | |
| <option value="yolov8n" selected>yolov8n (6.37 MB)</option> | |
| <option value="yolov8s">yolov8s (22.4 MB)</option> | |
| <option value="yolov8m">yolov8m (51.9 MB)</option> | |
| <option value="yolov8l">yolov8l (87.5 MB)</option> | |
| <option value="yolov8x">yolov8x (137 MB)</option> | |
| </select> | |
| </div> | |
| <!-- drag and drop area --> | |
| <div class="relative"> | |
| <div | |
| id="drop-area" | |
| class="flex flex-col items-center justify-center border-2 border-gray-300 border-dashed rounded-xl relative aspect-video w-full overflow-hidden" | |
| > | |
| <div | |
| class="flex flex-col items-center justify-center space-y-1 text-center" | |
| > | |
| <svg | |
| width="25" | |
| height="25" | |
| viewBox="0 0 25 25" | |
| fill="none" | |
| xmlns="http://www.w3.org/2000/svg" | |
| > | |
| <path | |
| d="M3.5 24.3a3 3 0 0 1-1.9-.8c-.5-.5-.8-1.2-.8-1.9V2.9c0-.7.3-1.3.8-1.9.6-.5 1.2-.7 2-.7h18.6c.7 0 1.3.2 1.9.7.5.6.7 1.2.7 2v18.6c0 .7-.2 1.4-.7 1.9a3 3 0 0 1-2 .8H3.6Zm0-2.7h18.7V2.9H3.5v18.7Zm2.7-2.7h13.3c.3 0 .5 0 .6-.3v-.7l-3.7-5a.6.6 0 0 0-.6-.2c-.2 0-.4 0-.5.3l-3.5 4.6-2.4-3.3a.6.6 0 0 0-.6-.3c-.2 0-.4.1-.5.3l-2.7 3.6c-.1.2-.2.4 0 .7.1.2.3.3.6.3Z" | |
| fill="#000" | |
| /> | |
| </svg> | |
| <div class="flex text-sm text-gray-600"> | |
| <label | |
| for="file-upload" | |
| class="relative cursor-pointer bg-white rounded-md font-medium text-blue-950 hover:text-blue-700" | |
| > | |
| <span>Drag and drop your image here</span> | |
| <span class="block text-xs">or</span> | |
| <span class="block text-xs">Click to upload</span> | |
| </label> | |
| </div> | |
| <input | |
| id="file-upload" | |
| name="file-upload" | |
| type="file" | |
| class="sr-only" | |
| /> | |
| </div> | |
| <canvas | |
| id="canvas" | |
| class="absolute pointer-events-none w-full" | |
| ></canvas> | |
| <canvas | |
| id="canvas-result" | |
| class="absolute pointer-events-none w-full" | |
| ></canvas> | |
| </div> | |
| <div class="text-right py-2"> | |
| <button | |
| id="share-btn" | |
| hidden | |
| class="bg-white rounded-md hover:outline outline-orange-200 disabled:opacity-50" | |
| > | |
| <img | |
| src="https://huggingface.co/datasets/huggingface/badges/raw/main/share-to-community-sm.svg" | |
| /> | |
| </button> | |
| </div> | |
| </div> | |
| <div> | |
| <div class="flex gap-3 items-center" id="image-select"> | |
| <h3 class="font-medium">Examples:</h3> | |
| <img | |
| src="https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/candle/examples/sf.jpg" | |
| class="cursor-pointer w-24 h-24 object-cover" | |
| /> | |
| <img | |
| src="https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/candle/examples/bike.jpeg" | |
| class="cursor-pointer w-24 h-24 object-cover" | |
| /> | |
| </div> | |
| </div> | |
| <div> | |
| <div class="grid grid-cols-3 max-w-md items-center gap-3"> | |
| <label class="text-sm font-medium" for="confidence" | |
| >Confidence Threshold</label | |
| > | |
| <input | |
| type="range" | |
| id="confidence" | |
| name="confidence" | |
| min="0" | |
| max="1" | |
| step="0.01" | |
| value="0.25" | |
| oninput="this.nextElementSibling.value = Number(this.value).toFixed(2)" | |
| /> | |
| <output | |
| class="text-xs font-light px-1 py-1 border border-gray-700 rounded-md w-min" | |
| >0.25</output | |
| > | |
| <label class="text-sm font-medium" for="iou_threshold" | |
| >IoU Threshold</label | |
| > | |
| <input | |
| type="range" | |
| id="iou_threshold" | |
| name="iou_threshold" | |
| min="0" | |
| max="1" | |
| step="0.01" | |
| value="0.45" | |
| oninput="this.nextElementSibling.value = Number(this.value).toFixed(2)" | |
| /> | |
| <output | |
| class="font-extralight text-xs px-1 py-1 border border-gray-700 rounded-md w-min" | |
| >0.45</output | |
| > | |
| </div> | |
| </div> | |
| <div> | |
| <button | |
| id="detect" | |
| disabled | |
| class="bg-blue-950 hover:bg-blue-700 text-white font-normal py-2 px-4 rounded disabled:opacity-75 disabled:hover:bg-blue-950" | |
| > | |
| Detect Objects | |
| </button> | |
| </div> | |
| </main> | |
| </body> | |
| </html> | |