Subpixel edges and geometric fitting
Sobel/Scharr/Canny edges → subpixel refinement → RANSAC line, circle or curve fitting → geometric calculation
JIVISION offers project development and technical assessment for Tire Tread, Sidewall and Rubber-Product Inspection. Scope: Missing rubber, bubbles, cracks, tread patterns, characters and foreign matter.
Missing rubber, bubbles, cracks, tread patterns, characters and foreign matter
Define tread/sidewall zones, reflections and speed; use multiple views for groove occlusion and do not infer tire life.
These are candidate implementation paths. Establish a baseline on real samples, then select or combine methods for imaging, speed and deployment constraints. Model names do not imply measured project results.
Sobel/Scharr/Canny edges → subpixel refinement → RANSAC line, circle or curve fitting → geometric calculation
RT-DETR, RTMDet, YOLOX, PP-YOLOE or rotated-box detection → non-maximum suppression and confidence thresholds → task rules
U-Net, DeepLabV3+, SegFormer or Mask2Former → connected components and morphology → region measurements
PatchCore, PaDiM, EfficientAD, FastFlow or STFPM → anomaly maps → threshold calibration and region merging
DB/DB++ text detection → orientation and perspective correction → SVTR/CTC recognition or Tesseract → field validation
Provide product variants, defect definitions and reference parts, acceptable and borderline samples, field of view, takt time, cameras/lighting and trigger/reject interfaces.
Result schema, algorithm or processing configuration, example outputs and evaluation records for: Missing rubber, bubbles, cracks, tread patterns, characters and foreign matter. Software format and source-code scope are agreed in the contract.
Specify input formats, output fields, coordinates/units, error states, versions and invocation methods. Define review and failure handling. The statement of work determines the exact scope of source code, executables, model files or analysis reports.
Defect recall; pattern/character accuracy; circumference coverage
Separate test data by product, batch and defect class. Report misses, false calls, minimum visible conditions and line cycle time; test physical rejection separately.
These are measures to agree and test, not achieved-performance claims. Freeze samples, reference truth, thresholds and hardware/software versions before acceptance; report subgroup results and failures, identifying under-sampled conditions as uncovered.
Agree targets, stations, inputs and responsibilities in a statement of work, separating required and excluded conditions.
Use representative samples to test critical risks, document feasibility/failures and scope the next-stage estimate.
Implement agreed functions and interfaces with configuration/change records; use offline replay before authorized device or site integration.
Retest against individual measures and hand over contracted artifacts with known limits; manage maintenance, expansion and changeovers as subsequent work packages.
Image decisions cover visible features under agreed conditions; acceptable appearance does not establish material, strength, sealing or electrical conformity.
Candidate technologies are not license clearance. Check code, model weights, training data and dependency versions separately. Replace, license or exclude components unsuitable for the intended commercial delivery. Customer data is not used for public training by default.
Missing rubber, bubbles, cracks, tread patterns, characters and foreign matter. Deliverables: Result schema, algorithm or processing configuration, example outputs and evaluation records for: Missing rubber, bubbles, cracks, tread patterns, characters and foreign matter. Software format and source-code scope are agreed in the contract.
Define tread/sidewall zones, reflections and speed; use multiple views for groove occlusion and do not infer tire life.
Task-specific measures: Defect recall; pattern/character accuracy; circumference coverage. Separate test data by product, batch and defect class. Report misses, false calls, minimum visible conditions and line cycle time; test physical rejection separately.
After reviewing samples for missing rubber, bubbles, cracks, tread patterns, characters and foreign matter, equipment conditions and interfaces, scope validation, development, deployment and acceptance separately. Data coverage, site changes and delivery rights affect the estimate; no fixed performance or schedule is promised before assessment.
Service ID: A38 · Tire Tread, Sidewall and Rubber-Product Inspection
Describe available samples, equipment and target measures. Agree confidentiality and permissions before transferring sensitive or personal data through an approved channel.
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