read_pod op• Data kinds: table → table
• Call: import fullseye as fs; fs.ledger.symbol_read_trials(symbol, factor, levels, *, trials=20, reader='auto', symbologies=None, truth=None, module_px=4.0, render=None, capture=None, rotate='random', rotate_jitter_deg=5.0, level_jitter=0.0, refine=False, seed=0) (implementation को सीधे call करना हो तो import symbolpod; symbolpod.symbol_read_trials(symbol, factor, levels, *, trials=20, reader='auto', symbologies=None, truth=None, module_px=4.0, render=None, capture=None, rotate='random', rotate_jitter_deg=5.0, level_jitter=0.0, refine=False, seed=0), registry से लेना हो तो opssymbol.get("symbol_read_trials"))
• GPU: नहीं (केवल CPU reference implementation)
हर degradation level पर symbol को trials बार capture करके पढ़ता है और हर प्रयास की एक row लौटाता है (table)।
> नीचे का विस्तृत विवरण मूल text में है — सारांश और headings का अनुवाद हो चुका है।
For each level of the degradation factor (see DEGRADATION_FACTORS), render the symbol (symrender.render_symbol), capture it (symrender.capture_degrade) and read it (symbol_read), trials times with fresh nuisance: in-plane rotation (rotate="random": uniform over 360° for 2-D symbols, ±rotate_jitter_deg around 0 for 1-D; a number fixes it), a sub-pixel offset in [0, 1) px and the sensor-noise seed. For a 1-D table the reader is restricted to the table's own symbology unless symbologies is given (a line reader enables only what it expects; all-symbology reading short-reads). render / capture hold the fixed settings of the other knobs; the sensor defaults to full_well_e = 20000, read_noise_e = 10, 8 bits. truth defaults to the table's text.
Returns columns level, trial, hit (1 = read the true text), misread (1 = read a different text), noread, text (object array), plus factor, worse_when_larger, truth, reader, stage.
level_jitter (relative, default 0) multiplies each trial's actual level by 1 + level_jitter · N(0, 1) while the table keeps the nominal level — the process variation of the line (e.g. part height moving the focus). It is a declared assumption, not a fit knob.
refine=True first runs every level with max(4, trials // 4) trials, brackets the transition (the last level read >= 95 % and the first read <= 5 %, in the order of increasing degradation) and then runs len(levels) evenly spaced levels across that bracket with trials each (stage = "coarse" / "fine"; both enter the table). Without it a coarse sweep easily ends in complete separation.
空の入力(levels が 3 未満)は ValueError。拒否(ValueError): 未知の factor、trials < 1、水準の重複・非有限、render / capture に掃引中の因子と同じ鍵、読み取り器を決められない表。
• Sample data catalog (DL URL / license) — 2-D के लिए skimage.data (BSD/public) + synthetic, 3-D के लिए real data sources (Stanford/PDS आदि) के DL URL।
• Operators का स्रोत और संदर्भ — इस op family के मूल research/methods के स्रोत।
• Algorithm का मानक स्रोत (लेखक, वर्ष) और उपयोग ऊपर की family usage guide में दिए गए हैं।
• poc_symbol_package_1d — py -3.11 examples/poc_symbol_package_1d.py
• poc_symbol_part_dpm — py -3.11 examples/poc_symbol_part_dpm.py
table को input के रूप में लेते हैं)render_symbol · symbol_read_pod · ocr_classify · ocr_read_line · ocr_read_trials
read_pod)*Provenance: symbolpod.py — SYMBOL operator registry. यह per-op note tools/opdocs.py md से अपने-आप generate होता है (हाथ से edit न करें)।*
© 2026 Kazufumi Furuse — Fullseye operator documentation. Licensed under Apache-2.0.