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    "msgid": "<20220325092555.1799897-1-kieran.bingham@ideasonboard.com>",
    "date": "2022-03-25T09:25:50",
    "name": "[libcamera-devel,v3,0/5] ipa: ipu3: af: Small improvements",
    "submitter": {
        "id": 4,
        "url": "https://patchwork.libcamera.org/api/1.1/people/4/?format=api",
        "name": "Kieran Bingham",
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            "date": "2022-03-25T09:25:50",
            "name": "ipa: ipu3: af: Small improvements",
            "version": 3,
            "mbox": "https://patchwork.libcamera.org/series/3000/mbox/"
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        "To": "libcamera devel <libcamera-devel@lists.libcamera.org>,\n\tKate Hsuan <hpa@redhat.com>,\n\tJean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com>",
        "Date": "Fri, 25 Mar 2022 09:25:50 +0000",
        "Message-Id": "<20220325092555.1799897-1-kieran.bingham@ideasonboard.com>",
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        "Subject": "[libcamera-devel] [PATCH v3 0/5] ipa: ipu3: af: Small improvements",
        "X-BeenThere": "libcamera-devel@lists.libcamera.org",
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        "List-Subscribe": "<https://lists.libcamera.org/listinfo/libcamera-devel>,\n\t<mailto:libcamera-devel-request@lists.libcamera.org?subject=subscribe>",
        "From": "Kieran Bingham via libcamera-devel\n\t<libcamera-devel@lists.libcamera.org>",
        "Reply-To": "Kieran Bingham <kieran.bingham@ideasonboard.com>",
        "Errors-To": "libcamera-devel-bounces@lists.libcamera.org",
        "Sender": "\"libcamera-devel\" <libcamera-devel-bounces@lists.libcamera.org>"
    },
    "content": "Following review of the IPU3 Af implementation, the following additional\nimprovements were identified.\n\nNo functional change to the running of the algorithm is intended or\nexpected, though this does remove a memcpy, and adapts to use a Span for\nrange based iterators, as well as hopefully make it easier to use custom\nROI's and return the AF regions in later developments.\n\n *** This is only compile tested! ***\n\nKate/JM - could you test this please?\n\nv3:\n - Minor cleanups from Laurent and collect tags.\n - Keeping the two loop implementation of Af::afEstimateVariance\n   to prevent risk of \"catasrophic cancellation\".\n\nKieran Bingham (5):\n  ipa: ipu3: af: Move constants to implementation\n  ipa: ipu3: af: Use geometry classes to perform grid centering\n  ipa: ipu3: af: Remove redundant memcpy\n  ipa: ipu3: af: Use Span for y_table_item_t\n  ipa: ipu3: af: Simplify accumulations of y_items\n\n src/ipa/ipu3/algorithms/af.cpp | 140 +++++++++++++--------------------\n src/ipa/ipu3/algorithms/af.h   |  15 +---\n 2 files changed, 56 insertions(+), 99 deletions(-)"
}