3A 제어: 프레임 정합성 결함 대응을 위한 처리율 제한

raspberrypi/libcamera / src/ipa/rpi/controller/rpi/af.cpp / Af::updateLensPosition / L692-L711

nitted_) { /* from a known lens position: apply slew rate limit */ fsmooth_ = std::clamp(ftarget_, fsmooth

• 기술 영역lens position
• 메커니즘rate limit

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