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| 型号： | MT9D131C12STC |
| 厂商： | Aptina LLC |
| 文件页数： | 12/18页 |
| 文件大小： | 0K |
| 描述： | SENSOR IMAGE 2MP CMOS 48-CLCC |
| 标准包装： | 96 |
| 象素大小： | 2.8µm x 2.8µm |
| 有源象素阵列： | 1600H x 1200V |
| 每秒帧数： | 15 |
| 电源电压： | 2.5 V ~ 3.1 V |
| 类型： | CMOS 成像 |
| 封装/外壳： | 48-CLCC |
| 供应商设备封装： | 48-CLCC |
| 包装： | 托盘 |
| 请注意： | * |
| 产品目录页面： | 739 (CN2011-ZH PDF) |
| 配用： | 557-1253-ND - KIT HEAD BOARD FOR MT9D131 557-1248-ND - KIT DEV FOR MT9D131 |
| 其它名称： | 557-1311 |
Preliminary
MT9D131: 1/3.2-Inch 2-Mp SOC Digital Image Sensor
Architecture Overview
Auto Exposure
The auto exposure (AE) algorithm performs automatic adjustments of the image bright-
ness by controlling exposure time and analog gains of the sensor core as well as digital
gains applied to the image.
Two auto exposure algorithm modes are available:
1. preview
2. scene evaluative
Auto exposure is implemented by means of a firmware driver that analyzes image statis-
tics collected by exposure measurement engine, makes a decision and programs the
sensor core and color pipeline to achieve the desired exposure. The measurement
engine subdivides the image into 16 windows organized as a 4 x 4 grid.
Preview Mode
This exposure mode is activated during preview or video capture. It relies on the expo-
sure measurement engine that tracks speed and amplitude of the change of the overall
luminance in the selected windows of the image.
The backlight compensation is achieved by weighting the luminance in the center of the
image higher than the luminance on the periphery. Other algorithm features include the
rejection of fast fluctuations in illumination (time averaging), control of speed of
response, and control of the sensitivity to the small changes. While the default settings
are adequate in most situations, the user can program target brightness, measurement
window, and other parameters described above.
Scene Evaluative Algorithm
A scene evaluative AE algorithm is available for use in snapshot mode. The algorithm
performs scene analysis and classification with respect to its brightness, contrast and
composure and then decides to increase, decrease or keep original exposure target. It
makes most difference for backlight and bright outdoor conditions.
Auto White Balance
The MT9D131 has a built-in auto white balance (AWB) algorithm designed to compen-
sate for the effects of changing spectra of the scene illumination on the quality of the
color rendition. This sophisticated algorithm consists of two major parts: a measure-
ment engine performing statistical analysis of the image and a driver performing the
selection of the optimal color correction matrix, digital, and sensor core analog gains.
While default settings of these algorithms are adequate in most situations, the user can
re-program base color correction matrices, place limits on color channel gains, and con-
trol the speed of both matrix and gain adjustments. Unlike simple white balancing algo-
rithms found in many PC cameras, the MT9D131 AWB does not require the presence of
gray or white elements in the image for good color rendition. The AWB does not attempt
to locate "brightest" or "grayest" element of the image but instead performs sophisti-
cated image analysis to differentiate between changes in predominant spectra of illumi-
nation and changes in predominant colors of the scene. While defaults are suitable for
most applications, a wide range of algorithm parameters can be overwritten by the user
using the serial interface.
Flicker Detection
Flicker occurs when the integration time is not an integer multiple of the period of the
light intensity. The automatic flicker detection block does not compensate for the
flicker, but rather avoids it by detecting the flicker frequency and adjusting the integra-
tion time. For integration times below the light intensity period (10ms for 50Hz environ-
ment), flicker cannot be avoided.
PDF: 09005aef824c90ce/Source: 09005aef824c90d6
MT9D131_LDS_2.fm - Rev. B 3/07 EN
12
Micron Technology, Inc., reserves the right to change products or specifications without notice.
?2006 Micron Technology, Inc. All rights reserved.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MT9D131C12STC_DP | 制造商:Aptina Imaging 功能描述:MT9D131C12STC_DP |
| MT9D131C12STCD ES | 功能描述:KIT DEV FOR MT9D131 RoHS:是 类别:编程器，开发系统 >> 评估板 - 传感器 系列:Micron®DigitalClarity® 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- |
| MT9D131C12STCH ES | 功能描述:KIT HEAD BOARD FOR MT9D131 RoHS:是 类别:编程器，开发系统 >> 评估板 - 传感器 系列:Micron®DigitalClarity® 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- |
| MT9D131L12STCD ES | 功能描述:KIT DEVELOPMENT FOR MT9D131 RoHS:是 类别:编程器，开发系统 >> 评估板 - 传感器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- |
| MT9D131L12STCH ES | 功能描述:KIT HEAD BOARD FOR MT9D131 RoHS:是 类别:编程器，开发系统 >> 评估板 - 传感器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- |
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