From patchwork Thu Aug 6 15:19:44 2026 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Plowman X-Patchwork-Id: 27667 Return-Path: X-Original-To: parsemail@patchwork.libcamera.org Delivered-To: parsemail@patchwork.libcamera.org Received: from lancelot.ideasonboard.com (lancelot.ideasonboard.com [92.243.16.209]) by patchwork.libcamera.org (Postfix) with ESMTPS id 9AE91C330F for ; Thu, 6 Aug 2026 15:27:16 +0000 (UTC) Received: from lancelot.ideasonboard.com (localhost [IPv6:::1]) by lancelot.ideasonboard.com (Postfix) with ESMTP id B99C46817F; Thu, 6 Aug 2026 17:27:13 +0200 (CEST) Authentication-Results: lancelot.ideasonboard.com; dkim=pass (2048-bit key; unprotected) header.d=raspberrypi.com header.i=@raspberrypi.com header.b="qOc3JXN1"; dkim-atps=neutral Received: from mail-wm1-x32e.google.com (mail-wm1-x32e.google.com [IPv6:2a00:1450:4864:20::32e]) by lancelot.ideasonboard.com (Postfix) with ESMTPS id 6A4B768169 for ; Thu, 6 Aug 2026 17:27:07 +0200 (CEST) Received: by mail-wm1-x32e.google.com with SMTP id 5b1f17b1804b1-495590dde14so26853255e9.0 for ; Thu, 06 Aug 2026 08:27:07 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=raspberrypi.com; s=google; t=1786030027; x=1786634827; darn=lists.libcamera.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to:content-type; bh=mp/RCSP/XnkclZU2Pqg6K77RkCgfxALEVVOvYj/fxS4=; b=qOc3JXN1scz8g6Th9scjuzuRbklTWPua7bTC+8N7awHl8OIyEzF0xiwGvkCmyIX228 NnbNDlks7WTVvoblSMRxrD9uZ0tdtQV5adPsvWABajnCe40oyOywvutJxB77wMyU7Jal pcScpzZRppeIBUs6xgBgS/JI1VlYupxn1MPJpe4dEKmwZ8OazI28cSR3h6a+buzONPCN GGYShEEn8zs7lxmRM2ujyzxAQ/XxXX690X1A63I73gOjzM5pEURHoZmLWjxtny2t4QXJ SM8pxVctHUgt0QbUGoMxhajEIRAM6b2yJyKMVXB9SNgvlUgThb8mcqNNwaWmB9f9i8OB HDzw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1786030027; x=1786634827; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to:content-type; bh=mp/RCSP/XnkclZU2Pqg6K77RkCgfxALEVVOvYj/fxS4=; b=sCCz6DJ1+hIfKG73Wru+DJtc6sL7HEGEyINHnHbOpvNwzf2q47Dp2Jk7NRVGhd7U7m WpHhNbgRGsdehNTK3xxZOlgdzJnfU0Hgj0YRa+XfLBxaNBJGUEWgZ7UYKIZTXH5H26Zn Mb8VlLqge8tq7kmYRMBIyjZAsnetggtfl15hFbdQl3WmeiZbrzrn7WvefxSC3Fh4Tkso NQE4FZwTLjK94iKELgMJRXJcv4Z/YA58l+xyfr4jfYjD4P2BVDlC9SBzAKKqpUX9GvOQ 19CCIEMHcIrCqWYFc+EhUp7Th6IIDQE3NWK0dM5eUFkTHBE6jC/oZayDn4Lgz2TexaKm BEOA== X-Gm-Message-State: AOJu0YyX74UR9gyXYaZwwqveXaHa4dlx5tU7pspklnffNU+vJIR+badL L5c+Bvo4fVdkDkpEYwNvL8hWnvGCgWTFDUJHlwRBYAf0WXLG4LH7G+84JNxaVsPm4US+hAI31dr TNr0s X-Gm-Gg: AR+sD11odmyeZAUsvdsIMwMywq9CJAH+bqLJ6LGuABFcMARifPMLpJqtEctJgG6P/hZ V7sFZ+wDgeB707hyxC0sgQBAaGok5qUj+VxoLnwTv8E5at27zGiMy14tK1hEuEfTDui69DwanPe o2AKJ1Nl4zTBjOobXgFDU12C++ly23L/ULU1nmZQwHgcGX5tOB7r3WemG+No7re5OkIF5FejxV+ eCgZkztvrjs4Y9N1r1PYaQ+enurFEXeqcTWRsQTUlNlZYO+RhMmZ7fW5kPvT75BsMAn7VMbKm7Q PMoKI5OumDtrMymZviiEOPUV1tn6XHs+r05hbznH2diJTiD55LCSJR/J2BfiAOjQH0z2Rb6PIYH vSJmWFz1Qd5yCsRboi9HgmNAIw9yFmOA8fo6Igje0B02F9k9ixBHMIASwJifL6OJdSkuYEg0S5n cbRaL/stdI1N8z12bmnq1oUj/0xdDGDdPlw4tctLWKfZvJSAB8POwXNLZ/er/F+YMu+EuN8R/0V w4fCsnPkBsz56bX8JurQhuz65cvxs/ApIlbirTwbMZLTyNY3Z0tP8yrP4GAg6PAFtdUeOnaMy7S PgKzAvGAnPH9DJ4= X-Received: by 2002:a05:600c:8b51:b0:495:6b55:f938 with SMTP id 5b1f17b1804b1-4994e7ba99emr230427055e9.10.1786030026859; Thu, 06 Aug 2026 08:27:06 -0700 (PDT) Received: from davidp-pi5.pitowers.org ([2a00:1098:3142:1f:4706:89ee:c47e:1087]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4995428f294sm70769235e9.15.2026.08.06.08.27.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 06 Aug 2026 08:27:06 -0700 (PDT) From: David Plowman To: libcamera-devel@lists.libcamera.org Cc: David Plowman , Naushir Patuck , Jacopo Mondi Subject: [PATCH v2 4/4] ipa: rpi: Update colour temperature curve for IMX662 Date: Thu, 6 Aug 2026 16:19:44 +0100 Message-ID: <20260806152701.4179-5-david.plowman@raspberrypi.com> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260806152701.4179-1-david.plowman@raspberrypi.com> References: <20260806152701.4179-1-david.plowman@raspberrypi.com> MIME-Version: 1.0 X-BeenThere: libcamera-devel@lists.libcamera.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: libcamera-devel-bounces@lists.libcamera.org Sender: "libcamera-devel" The CT (colour temperature) curve is extended at the bottom end, so that low light halogen images are less orange. Signed-off-by: David Plowman Reviewed-by: Naushir Patuck Acked-by: Jacopo Mondi --- src/ipa/rpi/pisp/data/imx662.json | 4 +++- src/ipa/rpi/vc4/data/imx662.json | 3 ++- 2 files changed, 5 insertions(+), 2 deletions(-) diff --git a/src/ipa/rpi/pisp/data/imx662.json b/src/ipa/rpi/pisp/data/imx662.json index 1aa5cf533..8491452b1 100644 --- a/src/ipa/rpi/pisp/data/imx662.json +++ b/src/ipa/rpi/pisp/data/imx662.json @@ -155,7 +155,7 @@ { "auto": { - "lo": 2910.0, + "lo": 2500.0, "hi": 5535.0 }, "incandescent": @@ -192,6 +192,7 @@ "bayes": 1, "ct_curve": [ + 2500.0, 0.6632, 0.2893, 2910.0, 0.5579, 0.3553, 3600.0, 0.4693, 0.4364, 4490.0, 0.3855, 0.5469, @@ -250,6 +251,7 @@ "enable_nn": 1, "ct_curve": [ + 2500.0, 0.6632, 0.2893, 2910.0, 0.5579, 0.3553, 3600.0, 0.4693, 0.4364, 4490.0, 0.3855, 0.5469, diff --git a/src/ipa/rpi/vc4/data/imx662.json b/src/ipa/rpi/vc4/data/imx662.json index dc28b53c4..aafccaced 100644 --- a/src/ipa/rpi/vc4/data/imx662.json +++ b/src/ipa/rpi/vc4/data/imx662.json @@ -86,7 +86,7 @@ { "auto": { - "lo": 2910.0, + "lo": 2500.0, "hi": 5535.0 }, "incandescent": @@ -123,6 +123,7 @@ "bayes": 1, "ct_curve": [ + 2500.0, 0.6632, 0.2893, 2910.0, 0.5583, 0.3541, 3600.0, 0.4695, 0.4348, 4490.0, 0.3856, 0.5447,