From patchwork Wed Feb 25 22:18:59 2026 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Javier Tia X-Patchwork-Id: 26239 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 1F204C0DA4 for ; Wed, 25 Feb 2026 22:20:20 +0000 (UTC) Received: from lancelot.ideasonboard.com (localhost [IPv6:::1]) by lancelot.ideasonboard.com (Postfix) with ESMTP id 6CA8D622F2; Wed, 25 Feb 2026 23:20:19 +0100 (CET) Authentication-Results: lancelot.ideasonboard.com; dkim=pass (2048-bit key; unprotected) header.d=jetm.me header.i=@jetm.me header.b="aSldUWDR"; dkim=pass (2048-bit key; unprotected) header.d=messagingengine.com header.i=@messagingengine.com header.b="MOv8txfG"; dkim-atps=neutral Received: from fhigh-a2-smtp.messagingengine.com (fhigh-a2-smtp.messagingengine.com [103.168.172.153]) by lancelot.ideasonboard.com (Postfix) with ESMTPS id 1432C622E7 for ; Wed, 25 Feb 2026 23:20:16 +0100 (CET) Received: from phl-compute-03.internal (phl-compute-03.internal [10.202.2.43]) by mailfhigh.phl.internal (Postfix) with ESMTP id 63E77140015D; Wed, 25 Feb 2026 17:20:15 -0500 (EST) Received: from phl-frontend-04 ([10.202.2.163]) by phl-compute-03.internal (MEProxy); Wed, 25 Feb 2026 17:20:15 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=jetm.me; h=cc:cc :content-transfer-encoding:content-type:date:date:from:from :in-reply-to:in-reply-to:message-id:mime-version:references :reply-to:subject:subject:to:to; s=fm2; t=1772058015; x= 1772144415; bh=etawwz8wYX5zyMveCrQVW5v7g9gVbr4YzsYl5Vs+M6A=; b=a SldUWDRyXGYys4B0uEM3MalS3j7asazw5xZ7P5j56ek1zyp8cgu7kjUTxw4F5j7W 78Vks5R7+x86OIdfYvPS44lmLPbi64wtrE5KfecZPETuMY34elwJzetwPCierLCA kAmE1cjlwP+WgNGmUx4RXZ9VC22LBTNf5TXid0KXjXPmlDBEbOdYbwjb+ScSQry0 Wp6BfIuE+vW92CG/RQ64zqcjbPveTmfIe1VfEww9F0JJQXEbTOKm0riKcr2eq2gA 36pO8+0HZQBdLBg90wwRfD9FIwvY7eEyEZU6czv+jhjlkJutjCAIii6RLdINw2i4 P5sQjAQAD5F73ABqtg/mg== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:cc:content-transfer-encoding :content-type:date:date:feedback-id:feedback-id:from:from :in-reply-to:in-reply-to:message-id:mime-version:references :reply-to:subject:subject:to:to:x-me-proxy:x-me-sender :x-me-sender:x-sasl-enc; s=fm3; t=1772058015; x=1772144415; bh=e tawwz8wYX5zyMveCrQVW5v7g9gVbr4YzsYl5Vs+M6A=; b=MOv8txfGvVnR65xsR /OGM6MmpylcbR/OB+TnqvhK5cKLZUv65105n/tLzjg+zGX7H+/DnRt+Kpi42MJz+ cCfmNTJmUeOBRfxB6KSss9S5g1oijafpXow5p7ruX0F5k1AyprZ2TeXIESlxFn8S MVMZXKxjWrG+bAsoj7QUmtPp1l5iixedNP7ZyXF0Iq7oKf9dgEeD5oydcKCHs3nN Gzh5HHFoTHH7H1C4xfbipnJmcDtmwGdqjWlXaof2dEGG/HXCzfyIdmsO9nhySPso f7BcM0TXk5LaR/28LDTE4DMJMw6B4+/5E5aFSropWOW9QfCBBemF6nErRJV3VYs9 ywXiQ== X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgeefgedrtddtgddvgeegvdelucetufdoteggodetrf dotffvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfurfetoffkrfgpnffqhgenuceu rghilhhouhhtmecufedttdenucenucfjughrpefhvfevufffkffojghfggfgsedtkeertd ertddtnecuhfhrohhmpeflrghvihgvrhcuvfhirgcuoehflhhoshhssehjvghtmhdrmhgv qeenucggtffrrghtthgvrhhnpeeiueehgeevudeiheeuheevgffhtdevheeuffeiieduff ffvdeftdejfefftdekheenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhepmhgr ihhlfhhrohhmpehflhhoshhssehjvghtmhdrmhgvpdhnsggprhgtphhtthhopedvpdhmoh guvgepshhmthhpohhuthdprhgtphhtthhopehlihgstggrmhgvrhgrqdguvghvvghlsehl ihhsthhsrdhlihgstggrmhgvrhgrrdhorhhgpdhrtghpthhtohepfhhlohhsshesjhgvth hmrdhmvg X-ME-Proxy: Feedback-ID: i9dde48b3:Fastmail Received: by mail.messagingengine.com (Postfix) with ESMTPA; Wed, 25 Feb 2026 17:20:14 -0500 (EST) From: Javier Tia To: libcamera-devel@lists.libcamera.org Cc: Javier Tia Subject: [PATCH 2/2] ipa: simple: data: Add OV2740 tuning file Date: Wed, 25 Feb 2026 16:18:59 -0600 Message-ID: <20260225221859.600869-3-floss@jetm.me> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260225221859.600869-1-floss@jetm.me> References: <20260225221859.600869-1-floss@jetm.me> 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" Add a sensor-specific tuning file for the OmniVision OV2740, commonly found in Intel IPU6 laptops (ThinkPad X1 Carbon, XPS, Surface). The tuning enables all Simple IPA algorithms including AGC, AWB, black level correction, and a color correction matrix calibrated for 6500K. The CCM compensates for the green bias inherent in Bayer demosaicing (the GRBG pattern has 2x green pixels vs red/blue). Without this file, libcamera falls back to uncalibrated.yaml which produces a heavy green tint on the OV2740. Signed-off-by: Javier Tia --- src/ipa/simple/data/meson.build | 1 + src/ipa/simple/data/ov2740.yaml | 22 ++++++++++++++++++++++ 2 files changed, 23 insertions(+) create mode 100644 src/ipa/simple/data/ov2740.yaml diff --git a/src/ipa/simple/data/meson.build b/src/ipa/simple/data/meson.build index 92795ee4..e3e4de74 100644 --- a/src/ipa/simple/data/meson.build +++ b/src/ipa/simple/data/meson.build @@ -1,6 +1,7 @@ # SPDX-License-Identifier: CC0-1.0 conf_files = files([ + 'ov2740.yaml', 'uncalibrated.yaml', ]) diff --git a/src/ipa/simple/data/ov2740.yaml b/src/ipa/simple/data/ov2740.yaml new file mode 100644 index 00000000..b48d50ce --- /dev/null +++ b/src/ipa/simple/data/ov2740.yaml @@ -0,0 +1,22 @@ +# SPDX-License-Identifier: CC0-1.0 +# +# OmniVision OV2740 tuning for libcamera Simple/SoftISP pipeline. +# +# Tested on ThinkPad X1 Carbon Gen 10 (Alder Lake) with Intel IPU6 ISYS. +# The CCM corrects the green bias inherent in Bayer demosaicing (2:1 green +# to red/blue pixel ratio in the CFA). Values were iteratively calibrated +# from captured frame measurements under 6500K lighting. +%YAML 1.1 +--- +version: 1 +algorithms: + - BlackLevel: + - Awb: + - Ccm: + ccms: + - ct: 6500 + ccm: [ 2.49, -0.91, -0.26, + -0.30, 1.20, 0.10, + 0.07, -0.80, 2.19 ] + - Adjust: + - Agc: