focus_box_index()

std::optional< size_t > MayaFlux::Yantra::VisionExtractor::focus_box_index ( const Kinesis::Vision::VisionAnalysis &  analysis )

private

Box index of the element the single-element methods act on.

Definition at line 224 of file VisionExtractor.cpp.

{
    if (!analysis.find_elements)
        return std::nullopt;
 
    const auto& elements = *analysis.find_elements;
 
    if (m_focus)
        return select_element(analysis, *m_focus);
 
    if (m_element_index < elements.contours.size()) {
        const auto label = elements.contours[m_element_index].label_id;
        if (label != 0 && label <= elements.boxes.size())
            return static_cast<size_t>(label - 1U);
    }
 
    if (m_element_index < elements.boxes.size())
        return m_element_index;
 
    return std::nullopt;
}

References MayaFlux::Kinesis::Vision::VisionAnalysis::find_elements, label, m_element_index, m_focus, and select_element().

Referenced by region_for_analysis(), and silhouette().

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