3A 제어: 확장성 한계 대응을 위한 보간

intel/ipu6-camera-hal / include/linux/v4l2-controls.h / v4l2_colorfx / L85-L106

define V4L2_CID_HUE_AUTO (V4L2_CID_BASE + 25) define V4L2_CID_WHITE_BALANCE_TEMPERATURE (V4L2_CID_BASE + 26) WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS define V4L2_CID_SHARPNESS (V4L2_CID_BASE + 27) define V4L2_CID_BACKLIGHT_COMPENSATION (V4L2_CID_BASE + 28) define V4L2_CID_CHROMA_AGC (V4L2_C…

• 기술 영역v4l2, white balance, sharpness, agc
• 메커니즘compensat

관측 시점 2020-10-21T06:15:07+08:00 · 최초 발견 commit 45469119a4

intel/ipu6-camera-hal / src/metadata/icamera_metadata_tags.h / icamera_metadata_tag_t / L110-L447

Main enum for defining camera metadata tags. New entries must always go before the section _END tag to preserve existing enumeration values. In addition, the name and type of the tag needs to be added to src/metadata/icamera_metadata_tag_info.c

• 기술 영역fps, awb
• 메커니즘compensat

관측 시점 2022-08-09T12:22:48+08:00 · 최초 발견 commit 6042cca6df

intel/ipu6-camera-hal / src/metadata/icamera_metadata_tags.h / icamera_metadata_tag / L110-L447

Main enum for defining camera metadata tags. New entries must always go before the section _END tag to preserve existing enumeration values. In addition, the name and type of the tag needs to be added to src/metadata/icamera_metadata_tag_info.c

• 기술 영역fps, awb
• 메커니즘compensat

관측 시점 2022-08-09T12:22:48+08:00 · 최초 발견 commit 6042cca6df

raspberrypi/libcamera / include/linux/v4l2-controls.h / v4l2_colorfx / L76-L94

define V4L2_CID_HUE_AUTO (V4L2_CID_BASE+25) define V4L2_CID_WHITE_BALANCE_TEMPERATURE (V4L2_CID_BASE+26) define V4L2_CID_SHARPNESS (V4L2_CID_BASE+27) define V4L2_CID_BACKLIGHT_COMPENSATION (V4L2_CID_BASE+28) define V4L2_CID_CHROMA_AGC (V4L2_CID_BASE+29) define V4L2_CID_COLOR_KILLER (V4L2_CID_BASE+30) define V4L2_CID_C…

• 기술 영역v4l2, white balance, sharpness, agc
• 메커니즘compensat

관측 시점 2026-05-04T02:20:11+03:00 · 최초 발견 commit 3c0ac8024d

raspberrypi/libcamera / include/linux/intel-ipu3.h / ipu3_uapi_bnr_static_config / L851-L862

&ipu3_uapi_bnr_static_config_thr_ctrl_shd_config @opt_center: optical center &ipu3_uapi_bnr_static_config_opt_center_config Above parameters and opt_center_sqr are used for white balance and shading. @lut: lookup table &ipu3_uapi_bnr_static_config_lut_config @bp_ctrl: detect and remove bad pixels as defined in struct …

• 기술 영역white balance
• 메커니즘lookup table

관측 시점 2025-12-04T16:16:56+01:00 · 최초 발견 commit 5ab66fa728

raspberrypi/libcamera / src/libcamera/software_isp/debayer_egl.h / DebayerEGL / L40-L122

ts 3 x 3 */ GLint ccmUniformDataIn_; /* Black Level compensation */ GLint blackLevelUniformDataIn_; /* Gamma */ GLi

• 기술 영역debayer, awb, ccm, black level
• 메커니즘compensat

관측 시점 2026-07-29T11:55:57+09:00 · 최초 발견 commit 63116875f2

raspberrypi/libcamera / src/ipa/libipa/awb_grey.h / libcamera / L17-L38

include "awb.h" include "interpolator.h"

• 기술 영역awb, ipa
• 메커니즘interpolat

관측 시점 2026-02-02T10:02:16Z · 최초 발견 commit 48d168e2bc

raspberrypi/libcamera / src/ipa/libipa/awb_grey.h / AwbImplementation / L21-L34

colourTemperature) override; private: std::optional<Interpolator<Vector<double, 2>>> colourGainCurve_; }

• 기술 영역awb
• 메커니즘interpolat

관측 시점 2026-02-02T10:02:16Z · 최초 발견 commit 48d168e2bc

raspberrypi/libcamera / src/ipa/rpi/controller/rpi/awb.h / RPiController / L17-L180

include "../awb_algorithm.h" include "../awb_status.h" include "libipa/pwl.h"

• 기술 영역awb, ipa
• 메커니즘interpolat

관측 시점 2025-10-19T15:28:34+03:00 · 최초 발견 commit 554c5c7fa1

raspberrypi/libcamera / src/ipa/rpi/controller/rpi/awb.h / AwbAlgorithm / L66-L170

ts, Metadata *imageMetadata) override; static double interpolateQuadatric(libcamera::ipa::Pwl::Point const &a, libcamera

• 기술 영역awb, ipa
• 메커니즘interpolat

관측 시점 2025-10-19T15:28:34+03:00 · 최초 발견 commit 554c5c7fa1

raspberrypi/libcamera / src/ipa/rpi/controller/rpi/awb.h / initialise / L71-L166

ts, Metadata *imageMetadata) override; static double interpolateQuadatric(libcamera::ipa::Pwl::Point const &a, libcamera

• 기술 영역ipa, awb
• 메커니즘interpolat

관측 시점 2025-10-19T15:28:34+03:00 · 최초 발견 commit 554c5c7fa1

raspberrypi/libcamera / src/ipa/rpi/controller/rpi/awb_bayes.cpp / AwbBayes / L78-L97

g bayesConfig_; void awbBayes(); libcamera::ipa::Pwl interpolatePrior(); double coarseSearch(libcamera::ipa::Pwl const &pri

• 기술 영역awb, ipa
• 메커니즘interpolat

관측 시점 2025-10-19T15:28:34+03:00 · 최초 발견 commit 554c5c7fa1

raspberrypi/libcamera / src/ipa/rpi/controller/rpi/awb_bayes.cpp / AwbBayes::prepareStats / L193-L213

ied to the stats in this pipeline, so stop * any LSC compensation. We also ignore config_.fast in this version. */ c

• 기술 영역awb, lsc
• 메커니즘compensat

관측 시점 2025-10-19T15:28:34+03:00 · 최초 발견 commit 554c5c7fa1

raspberrypi/libcamera / src/ipa/rpi/controller/rpi/awb_bayes.cpp / AwbBayes::interpolatePrior / L215-L239

awb bayes interpolate prior ipa::Pwl AwbBayes::interpolatePrior() { /* *

• 기술 영역awb, ipa
• 메커니즘interpolat

관측 시점 2025-10-19T15:28:34+03:00 · 최초 발견 commit 554c5c7fa1

raspberrypi/libcamera / src/ipa/rpi/controller/rpi/awb_bayes.cpp / AwbBayes::coarseSearch / L241-L285

oint of the search, but refine it with a quadratic * interpolation around its neighbours. */ if (points_.size() > 2) {

• 기술 영역awb, ipa
• 문제quadratic
• 메커니즘interpolat

관측 시점 2025-10-19T15:28:34+03:00 · 최초 발견 commit 554c5c7fa1

raspberrypi/libcamera / src/ipa/rpi/controller/rpi/awb_bayes.cpp / AwbBayes::fineSearch / L287-L367

ely across the CT curve, * now let's do a quadratic interpolation for the best result. */ bestPoint = std::max(1, s

• 기술 영역awb, ipa
• 문제quadratic
• 메커니즘interpolat
• 효과increas

관측 시점 2025-10-19T15:28:34+03:00 · 최초 발견 commit 554c5c7fa1

raspberrypi/libcamera / src/ipa/rpi/controller/rpi/awb_bayes.cpp / AwbBayes::awbBayes / L369-L413

. not entirely sure about this. */ ipa::Pwl prior = interpolatePrior(); prior *= zones_.size() / (double)(statistics_->awb

• 기술 영역awb, ipa
• 메커니즘interpolat
• 효과save

관측 시점 2025-10-19T15:28:34+03:00 · 최초 발견 commit 554c5c7fa1

raspberrypi/libcamera / src/ipa/rpi/controller/rpi/awb.cpp / Awb::interpolateQuadatric / L427-L445

awb interpolate quadatric double Awb::interpolateQuadatric(libcamera::

• 기술 영역awb, ipa
• 문제quadratic
• 메커니즘interpolat

관측 시점 2025-10-19T15:28:34+03:00 · 최초 발견 commit 554c5c7fa1

raspberrypi/libcamera / src/ipa/mali-c55/algorithms/ccm.cpp / Ccm::prepare / L130-L155

\copydoc libcamera::ipa::Algorithm::prepare

• 기술 영역ccm, ipa, awb
• 메커니즘interpolat

관측 시점 2026-05-22T18:53:27+02:00 · 최초 발견 commit 1bf7e9485e

raspberrypi/libcamera / src/ipa/mali-c55/algorithms/ccm.cpp / 1bf7e9485e

ipa: mali-c55: Implement Ccm algorithm Implement Ccm algorithm for Mali-C55 base on the libipa CcmAlgorithm class. Mali has configurable colour gains as part of the CCM hardware block. Fix them to 1.0 for the time being as white balance is performed by the dedicated Awb algorithm in the Bayer colour space. The existin…

• 기술 영역ipa, ccm, white balance, awb, bayer
• 메커니즘interpolat

관측 시점 2026-05-22T18:53:27+02:00

raspberrypi/libcamera / meson.build / 191e202178

libcamera v0.7.2 This release brings 113 commits, and interestingly fixes two separate saturation handling bugs in both the SoftISP and the Raspberry Pi IPA independently. In particular the fixes to the SoftISP mean we can look forward to tuning cameras on laptops and mobile phones with real CCMs now. Also on the Soft…

• 기술 영역ipa, black level, agc, pipeline handler, isp, digital gain, debayer, v4l2
• 문제unsupported, timeout
• 메커니즘interpolat
• 효과improv, prevent, avoid, reduc
• 평가benchmark
• 사소한 변경revert , rename

관측 시점 2026-07-10T11:12:38+01:00

raspberrypi/libcamera / src/ipa/libipa/interpolator.h / 9561bd2ed8

ipa: libipa: Handle missing YAML nodes in Interpolator Interpolator::readYaml() currently logs an error when passed an empty YAML object because it expects the node to always be a list. Optional tuning parameters such as colourGains in the AWB Grey algorithm may be absent from the tuning files. rkisp1 uses tuning file…

• 기술 영역ipa, awb
• 메커니즘interpolat
• 효과avoid

관측 시점 2026-05-28T12:49:09+05:30

raspberrypi/libcamera / meson.build / 183e37362f

libcamera v0.7.1 This release brings 142 commits with the largest developments in the core of libcamera components. Perhaps the most obvious is that we now use C++20 for the project. The Configuration file handling has had a substantial rework with updates to the yaml_parser. The RKISP1 IPA has now added a new Hue con…

• 기술 영역ipa, throughput, pipeline handler, sensor mode, isp, agc, v4l2, debayer
• 문제work around
• 메커니즘lookup table
• 효과improv, lower, reduc
• 평가benchmark
• 사소한 변경rename, gitignore, add missing include, remove unused

관측 시점 2026-04-28T19:13:28+01:00

raspberrypi/libcamera / meson.build / b7854fd07d

libcamera v0.7.0 This release brings 158 commits with substantial development on the SoftISP components. This brings in GPU acceleration, allowing us to get higher throughput for cameras using this pipeline. Further development to improve the image quality is ongoing now that we can perform more processing in realtime…

• 기술 영역throughput, image quality, pipeline handler, v4l2, isp, lsc, awb, ipa
• 문제workaround
• 메커니즘compensat, interpolat
• 효과higher throughput, improv, increas, avoid
• 평가benchmark
• 사소한 변경rename, revert , remove unused

관측 시점 2026-01-29T12:17:26Z

raspberrypi/libcamera / Issue #254

4-2b2cb15547c0) I am facing some error during the AWB calibration: SVD did not converge in Linear Least Squares. (cf att

• 기술 영역tuning file, awb, black level, pisp
• 메커니즘calibrat

관측 시점 2025-04-23T07:55:43Z

raspberrypi/libcamera / Issue #230

04:17.851426528] [873] DEBUG RPiAlsc alsc.cpp:140 Read calibrations_Cr calibration for ct 3000 [0:04:17.851662615] [873] DEBU

• 기술 영역camera manager, pisp, isp, ipa, media device, pipeline handler, v4l2, analogue gain
• 메커니즘calibrat

관측 시점 2025-01-20T14:00:20Z

raspberrypi/libcamera / src/ipa/simple/algorithms/ccm.cpp / c875f02456

ipa: simple: Port to use libipa CcmAlgorithm Now that libipa provides a common CCM algorithm implementation, replace the custom handling with the common Ccm. Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com> Tested-by: Robert Mader <robert.mader@collabora.com> Reviewed-by: Milan Zamazal <mzamazal@redhat.com> Tested-by: Mila…

• 기술 영역ipa, ccm, tuning file, awb
• 메커니즘interpolat
• 제거된 이전 방식interpolat

관측 시점 2026-05-20T23:52:35+02:00

raspberrypi/libcamera / src/android/camera_capabilities.cpp / CameraCapabilities::initializeStaticMetadata / L762-L1483

L_AE_AVAILABLE_TARGET_FPS_RANGES, ANDROID_CONTROL_AE_COMPENSATION_RANGE, ANDROID_CONTROL_AE_COMPENSATION_STEP, ANDROID_CON

• 기술 영역camera configuration, fps, awb, noise reduction
• 문제stall
• 메커니즘compensat, characteris
• 효과reduc

관측 시점 2026-09-18T11:10:49+02:00 · 최초 발견 commit fd88c9fa80

raspberrypi/libcamera / src/android/camera_capabilities.cpp / CameraCapabilities::requestTemplatePreview / L1512-L1613

requestTemplate->addEntry(ANDROID_CONTROL_AE_EXPOSURE_COMPENSATION, aeExposureCompensation); uint8_t aePrecapture

• 기술 영역request template, fps, camera_metadata, awb
• 메커니즘compensat
• 효과avoid

관측 시점 2026-09-18T11:10:49+02:00 · 최초 발견 commit fd88c9fa80

raspberrypi/libcamera / src/ipa/libipa/agc_mean_luminance.cpp / AgcMeanLuminance::effectiveYTarget / L548-L576

\brief Get the currently effective y target \param[in] lux The effective lux value \param[in] exposureCompensation The exposure compensation value This function returns the current y target including exposure compensation. \return The y target value

• 기술 영역agc
• 메커니즘compensat

관측 시점 2026-03-23T10:28:22+01:00 · 최초 발견 commit 957f0f4bd0

raspberrypi/libcamera / src/ipa/libipa/agc_mean_luminance.cpp / AgcMeanLuminance::calculateNewEv / L659-L702

\brief Calculate the new exposure value and split it between exposure time and gain \param[in] params The set of parameters for the exppsure value calculation Calculate a new exposure value to try to obtain the target. The calculated exposure value is filtered to prevent rapid changes from frame to frame, and divided …

• 기술 영역agc, exposure time, digital gain, analogue gain, pipeline handler, sensor driver
• 메커니즘compensat
• 효과prevent

관측 시점 2026-03-23T10:28:22+01:00 · 최초 발견 commit 957f0f4bd0

raspberrypi/libcamera / src/ipa/libipa/agc_mean_luminance.h / libcamera / L22-L99

include "exposure_mode_helper.h" include "histogram.h" include "pwl.h"

• 기술 영역ipa, agc, exposure time
• 메커니즘compensat
• 효과lower

관측 시점 2025-11-14T15:17:10+01:00 · 최초 발견 commit 63f9b4e5d9

raspberrypi/libcamera / src/ipa/libipa/awb_bayes.cpp / AwbBayes::gainsFromColourTemperature / L260-L269

\brief Compute white balance gains from a colour temperature \param[in] colourTemperature The colour temperature in Kelvin Compute the white balance gains from a \a colourTemperature. This function does not take any statistics into account. It simply interpolates the colour gains curve on a new colour temperature. \re…

• 기술 영역awb, white balance
• 메커니즘interpolat

관측 시점 2026-03-23T10:28:22+01:00 · 최초 발견 commit 957f0f4bd0

raspberrypi/libcamera / src/ipa/libipa/awb_bayes.cpp / AwbBayes::calculateAwb / L271-L307

prior = priors_.getInterpolated(lux);

• 기술 영역awb, ipa
• 메커니즘interpolat

관측 시점 2026-03-23T10:28:22+01:00 · 최초 발견 commit 957f0f4bd0

raspberrypi/libcamera / src/ipa/libipa/awb_bayes.cpp / AwbBayes::coarseSearch / L309-L366

oint of the search, but refine it with a quadratic * interpolation around its neighbors. */ if (points.size() > 2) {

• 기술 영역awb, ipa
• 문제quadratic
• 메커니즘interpolat

관측 시점 2026-03-23T10:28:22+01:00 · 최초 발견 commit 957f0f4bd0

raspberrypi/libcamera / src/ipa/libipa/awb_bayes.cpp / AwbBayes::fineSearch / L368-L464

ely across the CT curve, * now let's do a quadratic interpolation for the best result. */ bestPoint = std::clamp(be

• 기술 영역awb, ipa
• 문제quadratic
• 메커니즘interpolat
• 효과increas

관측 시점 2026-03-23T10:28:22+01:00 · 최초 발견 commit 957f0f4bd0

raspberrypi/libcamera / src/ipa/libipa/awb_bayes.cpp / AwbBayes::interpolateQuadratic / L477-L491

\brief Find extremum of function \param[in] a First point \param[in] b Second point \param[in] c Third point Given 3 points on a curve, find the extremum of the function in that interval by fitting a quadratic. \return The x value of the extremum clamped to the interval [a.x(), c.x()]

• 기술 영역awb
• 문제quadratic
• 메커니즘interpolat

관측 시점 2026-03-23T10:28:22+01:00 · 최초 발견 commit 957f0f4bd0

raspberrypi/libcamera / src/ipa/libipa/awb_bayes.h / libcamera / L21-L61

include "awb.h" include "interpolator.h" include "pwl.h"

• 기술 영역awb, ipa
• 문제quadratic
• 메커니즘interpolat

관측 시점 2026-03-23T10:28:22+01:00 · 최초 발견 commit 957f0f4bd0

raspberrypi/libcamera / src/ipa/libipa/awb_bayes.h / ipa / L23-L59

&stats, std::span<double> range) const; double interpolateQuadratic(ipa::Pwl::Point const &a, ipa::Pwl::Point cons

• 기술 영역ipa, awb
• 문제quadratic
• 메커니즘interpolat

관측 시점 2026-03-23T10:28:22+01:00 · 최초 발견 commit 957f0f4bd0

raspberrypi/libcamera / src/ipa/libipa/awb_bayes.h / AwbImplementation / L25-L57

&stats, std::span<double> range) const; double interpolateQuadratic(ipa::Pwl::Point const &a, ipa::Pwl::Point cons

• 기술 영역awb, ipa
• 문제quadratic
• 메커니즘interpolat

관측 시점 2026-03-23T10:28:22+01:00 · 최초 발견 commit 957f0f4bd0

raspberrypi/libcamera / src/ipa/libipa/awb_grey.cpp / AwbGrey::init / L44-L57

\brief Initialize the algorithm with the given tuning data \param[in] tuningData The tuning data for the algorithm Load the colour temperature curve from the tuning data. If there is no tuning data available, continue with a warning. Manual colour temperature will not work in that case. \return 0 on success, a negativ…

• 기술 영역awb, tuning file
• 메커니즘interpolat

관측 시점 2026-09-14T15:53:41+01:00 · 최초 발견 commit 8eae7a66fa

raspberrypi/libcamera / src/ipa/libipa/awb_grey.cpp / AwbGrey::gainsFromColourTemperature / L104-L114

\brief Compute white balance gains from a colour temperature \param[in] colourTemperature The colour temperature in Kelvin Compute the white balance gains from a \a colourTemperature. This function does not take any statistics into account. It simply interpolates the colour gains curve (if provided in the tuning file)…

• 기술 영역awb, white balance, tuning file
• 메커니즘interpolat

관측 시점 2026-09-14T15:53:41+01:00 · 최초 발견 commit 8eae7a66fa

raspberrypi/libcamera / src/ipa/libipa/meson.build

'fixedpoint.h', 'gamma.h', 'histogram.h', 'interpolator.h', 'lsc.h', 'lsc_base.h', 'lsc_polynomial

• 기술 영역agc, awb, ccm, lsc, v4l2, ipa
• 메커니즘interpolat

raspberrypi/libcamera / src/ipa/rkisp1/algorithms/lsc.cpp / LensShadingCorrection::prepare / L205-L245

\copydoc libcamera::ipa::Algorithm::prepare

• 기술 영역lens shading, ipa, awb, lsc
• 메커니즘interpolat

관측 시점 2026-09-18T11:10:50+02:00 · 최초 발견 commit 6ebe4fdbe8

raspberrypi/libcamera / src/ipa/rpi/controller/rpi/af.cpp / Af::findPeak / L502-L533

tion by fitting a parabola. * Adapted from awb.cpp: interpolateQaudaratic() */ if (i == 0) i++; else if (i + 1 >= sca

• 기술 영역lens position, awb
• 메커니즘interpolat

관측 시점 2026-03-23T10:28:22+01:00 · 최초 발견 commit 957f0f4bd0

raspberrypi/libcamera / src/ipa/rpi/controller/rpi/alsc.cpp / Alsc::read / L147-L190

f (ret) return ret; ret = readCalibrations(config_.calibrationsCr, params, "calibrations_Cr", config_.tableSiz

• 기술 영역awb
• 메커니즘calibrat

관측 시점 2026-03-23T10:28:22+01:00 · 최초 발견 commit 957f0f4bd0

raspberrypi/libcamera / src/ipa/rpi/controller/rpi/awb_nn.cpp / AwbNN::prepareStats / L284-L300

ied to the stats in this pipeline, so stop * any LSC compensation. We also ignore config_.fast in this version. */ g

• 기술 영역awb, lsc
• 메커니즘compensat

관측 시점 2026-03-23T10:28:22+01:00 · 최초 발견 commit 957f0f4bd0

raspberrypi/libcamera / src/ipa/rpi/controller/rpi/awb_nn.cpp / AwbNN::transverseSearch / L302-L347

rbBest = ipa::Pwl::Point({ r, b }) + transverse * interpolateQuadatric(points[bestPoint - 1], points[bestPoint],

• 기술 영역awb, ipa
• 메커니즘interpolat

관측 시점 2026-03-23T10:28:22+01:00 · 최초 발견 commit 957f0f4bd0

raspberrypi/libcamera / src/ipa/libipa/agc_mean_luminance.cpp / a7bfb81608

ipa: libipa: agc_mean_luminance: Remove persistent params Remove `set{Lux,ExposureCompensation}()` and pass them via `Params`. Signed-off-by: Barnabás Pőcze <barnabas.pocze@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com> Reviewed-by: Stefan Klug <stefan.klug@ideasonboard.com>

• 기술 영역ipa, agc
• 메커니즘compensat

관측 시점 2026-07-16T11:37:52+02:00

raspberrypi/libcamera / src/ipa/libipa/agc_mean_luminance.cpp / 09b596a8b6

ipa: libipa: agc_mean_luminance: calculateNewEv(): Return y target The rkisp1 agc algorithms needs to save the current y target for the wdr algorithm. Instead of having to recalculate it, just return it as part of the result set. Signed-off-by: Barnabás Pőcze <barnabas.pocze@ideasonboard.com> Reviewed-by: Jacopo Mondi…

• 기술 영역ipa, agc
• 메커니즘compensat
• 효과save

관측 시점 2026-07-16T11:29:25+02:00

raspberrypi/libcamera / src/ipa/rpi/common/ipa_base.cpp / IpaBase::applyAGC / L1821-L1885

no way of knowing if a control is read-only. * As a workaround, assume that if the minimum and maximum values of *

• 기술 영역ipa, agc, exposure time, fps, vblank, hblank, v4l2, analogue gain
• 문제workaround
• 효과lower

관측 시점 2026-10-09T08:33:59+01:00 · 최초 발견 commit c682979b50

raspberrypi/libcamera / Documentation/libcamera_architecture.rst / libcamera Architecture / L4

the Image Processing Algorithms. This includes without limitation handling of the MC and V4L2 APIs, buffer management

• 기술 영역v4l2, camera manager, pipeline handler, media controller, stream configuration, schedul, ipa, 3a
• 문제limitation

intel/ipu6-camera-hal / src/3a/intel3a/Intel3AParameter.cpp / Intel3AParameter::dumpParameter / L749-L794

(" flash_mode %d, metering_mode %d, priority_mode %d, flicker_reduction_mode %d", mAeParams.flash_mode, mAeParams.metering

• 기술 영역metering, exposure time, analog gain, frame time, convergence, awb, lens position
• 문제flicker
• 효과reduc

관측 시점 2024-07-18T14:37:27+08:00 · 최초 발견 commit a354967a6a

intel/ipu6-camera-hal / src/3a/AiqUtils.cpp / AiqUtils::dumpAeResults / L30-L78

cket_mode_ull ? "ULL" : "none-ULL"); if (aeResult.flicker_reduction_mode == ia_aiq_ae_flicker_reduction_50hz) { LOG3("A

• 기술 영역analog gain, digital gain, line length, frame length, exposure time, convergence
• 문제flicker
• 효과reduc

관측 시점 2024-04-10T09:47:37+08:00 · 최초 발견 commit 28c6d21a5a

raspberrypi/libcamera / Issue #172

se.cpp:228 Invalid sensor configuration: bitDepth/size mismatch [2:51:25.496768637] [2915] ERROR RPI pipeline_base.cp

• 기술 영역pisp, denoise, framerate, awb, camera manager, isp, sensor configuration
• 문제mismatch

관측 시점 2024-12-13T05:20:18Z

raspberrypi/libcamera / src/ipa/rpi/common/ipa_base.cpp / 93bed4da91

ipa: rpi: Gate CamHelper::prepare() by the mistrust count The current logic in the IPA gates the controller/algorithms from running on a the frame if mistrustCount_ > 0. This logic is somewhat incorrect, as the image data is indeed valid, just the embedded data and other bits of metadata are possibly invalid. This com…

• 기술 영역ipa, pipeline handler, convergence, agc, awb
• 문제incorrect

관측 시점 2026-08-05T15:09:22+01:00

raspberrypi/libcamera / include/libcamera/internal/software_isp/swstats_cpu.h / d3e76fe1d1

libcamera: software_isp: Normalize statistics sums to 8-bit The SWSTATS_ACCUMULATE_LINE_STATS() macro divides the luminance value for the histogram to normalize it to 8-bit range, but does not apply the same normalization to the RGB sums. For 10-bit and 12-bit unpacked Bayer formats this means the sums are accumulated…

• 기술 영역isp, bayer, awb, black level, debayer
• 문제mismatch

관측 시점 2026-05-06T15:46:28-06:00

intel/ipu6-camera-hal / src/3a/intel3a/Intel3AParameter.cpp / Intel3AParameter::initAeParameter / L108-L126

y_mode = ia_aiq_ae_priority_mode_normal; mAeParams.flicker_reduction_mode = ia_aiq_ae_flicker_reduction_auto; mAeParams.ev_s

• 기술 영역metering, exposure time, analog gain, convergence
• 문제flicker
• 효과reduc

관측 시점 2024-07-18T14:37:27+08:00 · 최초 발견 commit a354967a6a