41 lines
1.1 KiB
Rust
41 lines
1.1 KiB
Rust
use anyhow::Context;
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use image::DynamicImage;
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use tract_onnx::onnx;
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use tract_onnx::prelude::*;
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// 关键点：直接使用 tract 重导出的 ndarray
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use crate::utils::image_io::png_rgba_white_preprocess;
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use crate::utils::image_processor::{convert_to_grayscale, resize_image};
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use std::collections::HashMap;
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use tract_onnx::prelude::tract_ndarray::s;
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/// OCR 模型：包含路径和字符集
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pub enum ModelType {
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Ocr,
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Det,
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Custom,
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}
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// 定义统一的 trait
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pub trait ModelSession {
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fn get_model_type(&self) -> ModelType;
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fn desc(&self) -> String;
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}
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pub struct ModelLoader {
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pub session: RunnableModel<TypedFact, Box<dyn TypedOp>, Graph<TypedFact, Box<dyn TypedOp>>>,
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}
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impl ModelLoader {
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pub fn load_model<P>(model_path: P) -> anyhow::Result<Self>
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where
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P: AsRef<std::path::Path>,
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{
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let session = onnx()
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.model_for_path(model_path)
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.with_context(|| "加载 ONNX 模型失败，请检查路径是否正确")?
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.into_optimized()?
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.into_runnable()?;
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Ok(Self { session })
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}
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}
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