Rockchip OCR

Text detection and recognition (PP-OCR style) on Rockchip NPUs.

OCR pipelines split into a text detector (e.g. DBNet) and a recogniser (CRNN / SVTR). Both can run on the NPU. The RKNN Model Zoo includes PP-OCR examples that are a practical starting point for meter reading, label and ANPR style applications.

Key points

Fix input shapes for the recogniser (e.g. 48×320) and pad text crops instead of using dynamic shapes.
Quantisation can hurt recogniser accuracy; consider FP16 or hybrid quantisation for it.

References

RKNN Model Zoo

OCR guides

In-depth OCR guides are in progress. Request a topic.

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