3A 제어: 프레임 정합성 결함 대응을 위한 예측

intel/ipu6-camera-hal / src/metadata/ParameterGenerator.h / icamera / L25-L114

include "Parameters.h" include "iutils/Thread.h"

• 기술 영역3a, awb
• 메커니즘predict
• 효과save

관측 시점 2023-09-22T17:58:18+08:00 · 최초 발견 commit 661e80b0b2

intel/ipu6-camera-hal / src/metadata/ParameterGenerator.h / ParameterGenerator / L48-L112

\class ParameterGenerator This class is used to generator parameter results. It updates the parameters with AIQ results, sensor embedded metadata and 3A statistics. The parameter results are stored with the frame sequence indicating on which frame the parameters are active.

• 기술 영역3a, awb
• 메커니즘predict
• 효과save

관측 시점 2023-09-22T17:58:18+08:00 · 최초 발견 commit 661e80b0b2

intel/ipu6-camera-hal / src/core/RequestThread.cpp / RequestThread::handleRequest / L399-L469

if (!mActive) return; // Check the final prediction value from 3A if (effectSeq <= mLastEffect

• 기술 영역3a
• 메커니즘predict
• 효과save

관측 시점 2025-06-26T18:11:36+08:00 · 최초 발견 commit 930a974a6e

raspberrypi/libcamera / src/ipa/rpi/controller/rpi/af.cpp / Af::earlyTerminationByPhase / L476-L500

is finite and has the expected sign; * Interpolate/extrapolate the lens position for zero phase. * Check that the

• 기술 영역lens position
• 메커니즘interpolat, extrapolat

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

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