ocr_read_trials — SYMBOL `ocr` op

• 数据种类:table → table

• 调用: import fullseye as fs; fs.ledger.ocr_read_trials(text, factor, levels, *, model, font=None, char_height_px=24.0, trials=20, render=None, capture=None, level_jitter=0.0, refine=False, seed=0)(要直接调用实现,import symbolpod; symbolpod.ocr_read_trials(text, factor, levels, *, model, font=None, char_height_px=24.0, trials=20, render=None, capture=None, level_jitter=0.0, refine=False, seed=0);从台账取用则 opssymbol.get("ocr_read_trials"))

• GPU:无(仅 CPU 参考实现)

用法

在每个退化水平下对印刷字符串拍摄 trials 次并用 OCR 读取,返回每次一行的表(table)。

> 以下的详细说明为原文 —— 摘要与标题已翻译。

Legibility trials for classical OCR: render text with the built-in font (ocrclassic.ocr_render_text; font defaults to the model's font), apply the capture chain (symrender.capture_degrade, sensor 20000 e / 10 e / 8 bit by default) with the swept factor (OCR_FACTORS), and read the line with ocrclassic.ocr_read_line. Each trial draws a fresh sub-pixel offset of the line and a sensor-noise seed. Outcomes per capture: hit = the whole string read exactly, misread = at least one character read as a *different* character (substituted or inserted, per ocrclassic.ocr_score) — the dangerous case, never folded into the read rate —, noread = otherwise (rejects ? or missing characters only). The table has the same columns as symbol_read_trials (plus rejected_chars / substituted_chars) so symbol_read_pod fits it. refine and level_jitter work as in symbol_read_trials.

空の入力(text == "" / levels が 3 未満)は ValueError。拒否(ValueError): 未知の factor、trials < 1、水準の重複・非有限、字種の外の文字、render / capture に掃引中の因子と同じ鍵、level_jitter が [0, 0.5] の外、OCR の模型でない model。

详细使用指南

• symbol_reading 族使用指南

参考(示例数据、文献)

• 示例数据目录(下载 URL / 许可证) —— 2-D 用 skimage.data(BSD/公有领域)加合成图,3-D 给出真实数据源(Stanford/PDS 等)的下载 URL。

• 算子来历与参考文献 —— 该算子族所依据的研究/方法出处。

• 算法的正典(作者、年份)与用途见上面的族使用指南。

可运行的示例(实际调用该算子并已验证的样例)

• poc_symbol_lot_ocr — py -3.11 examples/poc_symbol_lot_ocr.py

类型可衔接的下一个算子(可接受 `table` 作为输入)

render_symbol · symbol_read_trials · symbol_read_pod · ocr_classify · ocr_read_line

同类别(`ocr`)

ocr_font · ocr_render_text · ocr_segment_line · ocr_features · ocr_train · ocr_classify · ocr_read_line · ocr_score

*Provenance: symbolpod.py — SYMBOL 算子登记表。本条目由 tools/opdocs.py md 自动生成(请勿手工编辑)。*

ocr_read_trials — SYMBOL ocr op

用法