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[OCR] 识别视频截图导致帧率急剧降低 #499

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TonyZPW opened this issue May 18, 2023 · 5 comments
Open

[OCR] 识别视频截图导致帧率急剧降低 #499

TonyZPW opened this issue May 18, 2023 · 5 comments

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@TonyZPW
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TonyZPW commented May 18, 2023

使用ocr识别视频里的每张图片,导致帧率下降到3fps，请问有什么解决办法吗？是要改为web worker做吗？
@TonyZPW
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TonyZPW commented May 18, 2023

请问 ocr改为 web worker有demo可以参考吗？

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TonyZPW commented May 19, 2023

测试了下使用OCR的2个模型，喂入类型为Imagebitmap数据或者OffscreenCanvas预测结果都是0. 应该是不兼容

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TonyZPW commented May 19, 2023

const detModelPath = 'https://paddlejs.cdn.bcebos.com/models/fuse/ocr/ch_PP-OCRv2_det_fuse_activation/model.json';
const recModelPath = 'https://paddlejs.cdn.bcebos.com/models/fuse/ocr/ch_PP-OCRv2_rec_fuse_activation/model.json';

@TonyZPW TonyZPW closed this as completed May 19, 2023
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TonyZPW commented May 25, 2023

尝试了下用webworker demo里的方式对ocr库进行改造，detectRunner.predict(image); image是Imagebitmap类型 这里返回的结果全是0 .

@TonyZPW TonyZPW reopened this May 25, 2023
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TonyZPW commented May 25, 2023

不使用web worker的前提下，每进行一次识别，帧率都会下降很大，下降后会自动升上来但依然影响用户体验。我这边是直播流，我每5秒进行识别一次

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