OV01A10 Camera Profile — Dell Latitude 9320 (IPU6EP) — extracted from Intel aiqb + HAL config

comparison.md

OV01A10 Image Quality Comparison — Dell Latitude 9320

Intel HW ISP (libcamhal, 1280x720 NV12)

libcamera GPU ISP (.deb v4: sensor helper + AWB fix + CCM + BlackLevel, 60fps)

Notes

• HW ISP uses Intel's proprietary PSYS pipeline with full 3A from aiqb tuning
• GPU ISP uses libcamera's soft IPA with CCMs extracted from the same aiqb
• HW ISP has noticeably better white balance (warm/neutral tones)
• GPU ISP still has slight blue cast — soft AWB is simpler than Intel's 3A
• GPU ISP resolution is 1280x800 (full sensor) vs HW ISP 1280x720 (cropped)
• Stock kernel module (SBGGR10) is correct — no kernel patching needed

Required patches (on top of libcamera 0.7.0)

1. ov01a10.yaml tuning file with CCMs extracted from aiqb
2. CameraSensorHelper for OV01A10 (black level 64@10bit, gain=code/256)
3. AWB stats normalization fix for 10-bit sensors: patchwork.libcamera.org/patch/26258
4. IPU6 pipeline handler wrapping libcamhal (for HW ISP path)

.deb package

Built from branch ov01a10-soft-isp-tuning: 0.7.0-1ubuntu2+ov01a10+4

ov01a10_camera_profile.md

OV01A10 Camera Profile — Dell Latitude 9320 (Tributo)

Hardware

Parameter	Value
Sensor	OmniVision OV01A10
Platform	Intel Alder Lake (IPU6EP)
PCI ID	0x462e (ADLN)
Laptop	Dell Latitude 9320 (codename Tributo)
Position	User-facing (front camera)
Interface	CSI-2, port 0
Bayer pattern	BGGR (SBGGR10)

Sensor Specifications

Parameter	Value
Pixel array	1280 x 800
Active area	1280 x 800 (full)
Physical size	3.69 x 2.77 mm
Bit depth	10-bit
Max frame rate	30 fps
Color filter	Bayer GRBG (arrangement=2)
Fixed focus	Yes (AF mode=OFF only)
Aperture	f/2.5
Focal length	4.28 mm
Minimum focus distance	0.1 m
Hyperfocal distance	infinity (0.0)
OIS	None

Supported Output Resolutions

All via PSYS (hardware ISP), NV12 format:

Resolution	Use case	Min frame duration
1280 x 720	Preview / Video	33.3 ms (30 fps)
640 x 480	Preview / Video	33.3 ms (30 fps)
640 x 360	Preview / Video	33.3 ms (30 fps)

Internal ISYS capture: 1280 x 800 (raw SGRBG10), cropped to 1280 x 798 via BE SOC.

FPS ranges: 15-15, 15-30, 30-30.

AIQB Tuning Profile

Parameter	Value
File	/etc/camera/ipu6ep/ov01a10.aiqb
Size	458,968 bytes
Format	CPFF (Camera Parameter File Format)
Profile name	Dell_Tributo_OV01A_Release_ww50_4
Created	2021-12-07
Tool	IQStudio 21.45.0.0
LibIQ	2.0.359.0

AIQB Sections

Section	Description	Size
LCMC	Lens Correction & Color Matrix Calibration	355,168 bytes
LAIQ	Light / Auto IQ Parameters (3A tuning)	17,928 bytes
LISP	ISP Configuration Parameters	85,680 bytes
LTHR	Thermal/Temperature Parameters	168 bytes

Auto Exposure (AE) Parameters

Parameter	Value
AE modes	AUTO, MANUAL
Exposure time range	10 — 1,000,000 µs
Sensor exposure range	100 — 100,000 µs
Gain range	0 — 60 dB
Sensitivity range (ISO)	100 — 800
EV compensation range	-6 to +6
EV step	1/3
Exposure lag	2 frames
Gain lag	2 frames
AE lock	Available

Auto White Balance (AWB) Parameters

Supported AWB Modes

• AUTO
• INCANDESCENT (~2700K)
• FLUORESCENT (~4000K)
• DAYLIGHT (~5500K)
• FULL_OVERCAST
• PARTLY_OVERCAST
• SUNSET
• VIDEO_CONFERENCE
• MANUAL_CCT_RANGE
• MANUAL_WHITE_POINT
• MANUAL_GAIN
• MANUAL_COLOR_TRANSFORM

Calibration Illuminants

Color temperature calibration data found for these illuminants:

Illuminant	CCT (K)	Standard
Incandescent A	2856	CIE Illuminant A
Warm White	2700	Typical LED warm
Tungsten	3000
Fluorescent	4000	CIE F2
Cool White	4100
Daylight	5000	CIE D50
Bright Daylight	5100
Cloudy	6500	CIE D65
Shade	7500

AWB lock: Available.

Color Correction Matrices (CCM)

Multiple CCMs found for different illuminants. These are 3x3 matrices that convert from sensor RGB to sRGB-like output. Row sums = 1.0 (color-preserving).

CCM Set 1 (likely daylight/D65-ish)

[ 1.5720  -0.8123   0.2403]
[-0.1407   0.9484   0.1923]
[-0.3426  -1.9057   3.2483]

CCM Set 2 (higher color temperature)

[ 1.7045  -0.8785   0.1740]
[-0.5693   1.1627   0.4066]
[ 0.0676  -2.1108   3.0432]

CCM Set 3 (warmer / tungsten)

[ 0.9886   0.5896  -0.5783]
[-0.4999   1.3190   0.1809]
[-0.7300  -0.5693   2.2993]

CCM Set 4

[ 1.1247   0.0819  -0.2066]
[-0.7007   2.0684  -0.3677]
[-0.4059  -1.7790   3.1848]

Note: 233 potential CCM candidates found in LCMC section. The above are representative samples. Multiple CCMs per illuminant are used for interpolation.

Lens Shading Correction (LSC)

• Shading map size: 50 x 38 grid
• 4 channels: R, Gr, Gb, B
• Correction factors: higher at corners (vignetting compensation), ~1.0 at center

ISP Pipeline Features

Supported Features

• MANUAL_EXPOSURE
• MANUAL_WHITE_BALANCE
• IMAGE_ENHANCEMENT
• NOISE_REDUCTION
• PER_FRAME_CONTROL
• SCENE_MODE

Available ISP Modes

Feature	Available modes
Edge enhancement	OFF, FAST, HIGH_QUALITY, ZERO_SHUTTER_LAG
Hot pixel correction	FAST, HIGH_QUALITY
Noise reduction	OFF, FAST, HIGH_QUALITY, MINIMAL
Tone mapping	CONTRAST_CURVE, FAST, HIGH_QUALITY, GAMMA_VALUE
Lens shading	OFF, FAST, HIGH_QUALITY
Scene modes	NORMAL
Anti-banding	AUTO, 50Hz, 60Hz, OFF
Test patterns	Off (0), ColorBars (2)

Pipeline Configuration

Parameter	Value
PSys processor	Enabled
DVS type	IMG_TRANS
YUV color range	Full
Pipeline switch delay	60 frames
Max requests in-flight	5
Pipeline max depth	6
Reprocess max stall	4
Initial skip frames	0
Max raw data buffers	32
AIQD enabled	Yes
Tuning config	NORMAL→VIDEO/ov01a10, STILL_CAPTURE→VIDEO/ov01a10

Media Pipeline Topology

ov01a10 3-0036 (I2C, pad 0)
    ↓ SBGGR10_1X10, 1280x800
Intel IPU6 CSI-2 (CSI port)
    ↓ SBGGR10_1X10, 1280x800
Intel IPU6 CSI2 BE SOC 0
    ↓ SGRBG10_1X10, 1280x798 (crop: top=1, height=798)
Intel IPU6 BE SOC capture 0
    ↓ V4L2_PIX_FMT_SGRBG10
[PSYS Hardware ISP]
    ↓ V4L2_PIX_FMT_NV12
Output (1280x720 / 640x480 / 640x360)

Note: The Bayer pattern changes from SBGGR at sensor to SGRBG after BE SOC due to the 1-line top crop shifting the pattern.

Graph Settings (PSYS Processing)

From graph_settings_ov01a10.xml:

• Sensor mode: OV01A10_30fps (id=0), 1280x800, 30fps, 10bpp
• Bayer order: BGGR
• No binning (1:1), no scaling
• No PDAF
• Settings for multiple output resolutions with SIS (Scaled Image Streams)

Files

File	Purpose
/etc/camera/ipu6ep/ov01a10.aiqb	Binary tuning profile (3A, CCM, LSC, ISP)
/etc/camera/ipu6ep/sensors/ov01a10-uf.xml	HAL sensor configuration
/etc/camera/ipu6ep/gcss/graph_settings_ov01a10.xml	PSYS graph settings
/etc/camera/ipu6ep/gcss/graph_descriptor.xml	PSYS graph descriptor
/etc/camera/ipu6ep/libcamhal_profile.xml	Main HAL profile
/etc/camera/ipu6ep/psys_policy_profiles.xml	PSYS scheduling policy

Reference Captures

HW ISP captures (via libcamhal wrapper, 1280x720 NV12):

• hwi_1280x720_frame0.png — first frame
• hwi_1280x720_frame4.png — mid-sequence
• hwi_1280x720_frame9.png — last frame (3A converged)

ov01a10_tuned.yaml

# SPDX-License-Identifier: CC0-1.0
#
# Tuning file for OmniVision OV01A10 (1.3MP, 1280x800)
# For use with libcamera simple/soft ISP pipeline
#
# CCM data extracted from Dell Latitude 9320 (Tributo) aiqb profile
# (Dell_Tributo_OV01A_Release_ww50_4, created 2021-12-07 with IQStudio 21.45).
%YAML 1.1
---
version: 1
algorithms:
  - Awb:
  - Ccm:
      ccms:
        - ct: 2800
          ccm: [  0.9886,  0.5896, -0.5783,
                 -0.4999,  1.3190,  0.1809,
                 -0.7300, -0.5693,  2.2993 ]
        - ct: 4000
          ccm: [  1.1247,  0.0819, -0.2066,
                 -0.7007,  2.0684, -0.3677,
                 -0.4059, -1.7790,  3.1848 ]
        - ct: 5000
          ccm: [  1.5720, -0.8123,  0.2403,
                 -0.1407,  0.9484,  0.1923,
                 -0.3426, -1.9057,  3.2483 ]
        - ct: 6500
          ccm: [  1.7045, -0.8785,  0.1740,
                 -0.5693,  1.1627,  0.4066,
                  0.0676, -2.1108,  3.0432 ]
  - Agc:
...