# Two-stage image segmentation based on nonconvex <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si18.svg"><mml:mrow><mml:msub><mml:mi>ℓ</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:mspace width="0.16em"/><mml:mo linebreak="goodbreak">−</mml:mo><mml:mspace width="0.16em"/><mml:msub><mml:mi>ℓ</mml:mi><mml:mi>p</mml:mi></mml:msub></mml:mrow></mml:math> approximation and thresholding

> Research article (Applied Mathematics and Computation, 2021) · cited 11× · AI/ML

**Wikidata**: [openalex:W3138506499](https://www.wikidata.org/wiki/openalex:W3138506499)  
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