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{ "id": 23608, "url": "https://patchwork.libcamera.org/api/1.1/covers/23608/?format=api", "web_url": "https://patchwork.libcamera.org/cover/23608/", "project": { "id": 1, "url": "https://patchwork.libcamera.org/api/1.1/projects/1/?format=api", "name": "libcamera", "link_name": "libcamera", "list_id": "libcamera_core", "list_email": "libcamera-devel@lists.libcamera.org", "web_url": "", "scm_url": "", "webscm_url": "" }, "msgid": "<20250620124452.557855-1-naush@raspberrypi.com>", "date": "2025-06-20T12:42:21", "name": "[v1,0/8] Raspberry Pi: AF improvements", "submitter": { "id": 34, "url": "https://patchwork.libcamera.org/api/1.1/people/34/?format=api", "name": "Naushir Patuck", "email": "naush@raspberrypi.com" }, "mbox": "https://patchwork.libcamera.org/cover/23608/mbox/", "series": [ { "id": 5235, "url": "https://patchwork.libcamera.org/api/1.1/series/5235/?format=api", "web_url": "https://patchwork.libcamera.org/project/libcamera/list/?series=5235", "date": "2025-06-20T12:42:21", "name": "Raspberry Pi: AF improvements", "version": 1, "mbox": "https://patchwork.libcamera.org/series/5235/mbox/" } ], "comments": "https://patchwork.libcamera.org/api/covers/23608/comments/", "headers": { "Return-Path": "<libcamera-devel-bounces@lists.libcamera.org>", "X-Original-To": "parsemail@patchwork.libcamera.org", "Delivered-To": "parsemail@patchwork.libcamera.org", "Received": [ "from lancelot.ideasonboard.com (lancelot.ideasonboard.com\n\t[92.243.16.209])\n\tby patchwork.libcamera.org (Postfix) with ESMTPS id 8405EBDE6B\n\tfor <parsemail@patchwork.libcamera.org>;\n\tFri, 20 Jun 2025 12:45:01 +0000 (UTC)", "from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id 5319168DE2;\n\tFri, 20 Jun 2025 14:44:59 +0200 (CEST)", "from mail-wr1-x432.google.com (mail-wr1-x432.google.com\n\t[IPv6:2a00:1450:4864:20::432])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 201BE61535\n\tfor <libcamera-devel@lists.libcamera.org>;\n\tFri, 20 Jun 2025 14:44:58 +0200 (CEST)", "by mail-wr1-x432.google.com with SMTP id\n\tffacd0b85a97d-3a577ab8c34so275214f8f.3\n\tfor <libcamera-devel@lists.libcamera.org>;\n\tFri, 20 Jun 2025 05:44:58 -0700 (PDT)", "from NAUSH-P-DELL.pitowers.org ([93.93.133.154])\n\tby smtp.gmail.com with ESMTPSA id\n\t5b1f17b1804b1-45361461375sm41561525e9.14.2025.06.20.05.44.56\n\t(version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256);\n\tFri, 20 Jun 2025 05:44:56 -0700 (PDT)" ], "Authentication-Results": "lancelot.ideasonboard.com; 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\n\tFri, 20 Jun 2025 05:44:57 -0700 (PDT)", "From": "Naushir Patuck <naush@raspberrypi.com>", "To": "libcamera-devel@lists.libcamera.org", "Cc": "Naushir Patuck <naush@raspberrypi.com>", "Subject": "[PATCH v1 0/8] Raspberry Pi: AF improvements", "Date": "Fri, 20 Jun 2025 13:42:21 +0100", "Message-ID": "<20250620124452.557855-1-naush@raspberrypi.com>", "X-Mailer": "git-send-email 2.43.0", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "X-BeenThere": "libcamera-devel@lists.libcamera.org", "X-Mailman-Version": "2.1.29", "Precedence": "list", "List-Id": "<libcamera-devel.lists.libcamera.org>", "List-Unsubscribe": "<https://lists.libcamera.org/options/libcamera-devel>,\n\t<mailto:libcamera-devel-request@lists.libcamera.org?subject=unsubscribe>", "List-Archive": "<https://lists.libcamera.org/pipermail/libcamera-devel/>", "List-Post": "<mailto:libcamera-devel@lists.libcamera.org>", "List-Help": "<mailto:libcamera-devel-request@lists.libcamera.org?subject=help>", "List-Subscribe": "<https://lists.libcamera.org/listinfo/libcamera-devel>,\n\t<mailto:libcamera-devel-request@lists.libcamera.org?subject=subscribe>", "Errors-To": "libcamera-devel-bounces@lists.libcamera.org", "Sender": "\"libcamera-devel\" <libcamera-devel-bounces@lists.libcamera.org>" }, "content": "Hi,\n\n(submitting on behalf of Nick)\n\nThe following patch series improves our AF algorithm in a number of ways:\n\n1. Treat low-confidence PDAF values more linearly, which may improve reliability\nand reduce wobble a little.\n\n2. Check for IR lighting and suppress PDAF when it's detected (only when a new\nflag is set in the tuning file).\n\n3. Allow CDAF-based scan to be re-triggered multiple times in Continuous AF mode\n(when there's no PDAF).\n\n4. Allow subsequent scans to start from the current lens position, rather than\nalways from 0 (infinity).\n\n5. Skip the \"fine\" search altogether (when the tuning file has \"step_fine\": 0).\n\n6. Read the default lens position from the tuning file, rather than hard-coding\nit to 1.0 in source code as now.\n\n7. Not send the default position to the lens driver, when it would be\nimmediately overridden by a user-specified manual setting.\n\nThanks,\nNaush\n\nNick Hollinghurst (8):\n ipa: rpi: Defer initialising AF LensPosition ControlInfo and value\n ipa: rpi: controller: Improve findPeak() function in AF algorithm\n ipa: rpi: controller: AutoFocus weighting tweak\n ipa: rpi: controller: Autofocus CAF/PDAF stability tweak\n ipa: rpi: controller: AutoFocus tweak earlyTerminationByPhase()\n ipa: rpi: controller: Autofocus to use AWB statistics; re-trigger\n ipa: rpi: controller: AutoFocus bidirectional scanning\n ipa: rpi: Update IMX708 camera tuning files for AutoFocus changes\n\n src/ipa/rpi/common/ipa_base.cpp | 53 ++--\n src/ipa/rpi/controller/af_algorithm.h | 8 +-\n src/ipa/rpi/controller/rpi/af.cpp | 305 +++++++++++++++-----\n src/ipa/rpi/controller/rpi/af.h | 52 +++-\n src/ipa/rpi/pisp/data/imx708.json | 23 +-\n src/ipa/rpi/pisp/data/imx708_noir.json | 23 +-\n src/ipa/rpi/pisp/data/imx708_wide.json | 19 +-\n src/ipa/rpi/pisp/data/imx708_wide_noir.json | 19 +-\n src/ipa/rpi/vc4/data/imx708.json | 23 +-\n src/ipa/rpi/vc4/data/imx708_noir.json | 23 +-\n src/ipa/rpi/vc4/data/imx708_wide.json | 19 +-\n src/ipa/rpi/vc4/data/imx708_wide_noir.json | 19 +-\n 12 files changed, 442 insertions(+), 144 deletions(-)" }