can i obtain focal length and camera parameters from 2 stereo images?do i require direct aquisition from cameras for this??

needed for my project ..please help..

Answer 1

[Walter Roberson]

Try http://www.mathworks.com/help/techdoc/ref/exifread.html

[neenu jose]

1.but i didnt get details which i require..there was no focal length..

2.can i get the scaling in x and y axes??

[Walter Roberson]

What information _does_ get reported in EXIF for your images?

[neenu jose]

output =

PixelYDimension: 1600

PixelXDimension: 1200

ColorSpace: 1

FlashpixVersion: '0100'

Flash: 32

LightSource: 255

MeteringMode: 5

ComponentsConfiguration: [1 2 3 0]

DateTimeDigitized: '2011:04:01 16:57:05'

DateTimeOriginal: '2011:04:01 16:57:05'

ExifVersion: '0220'

ISOSpeedRatings: 0

FNumber: 2.8000

ExposureTime: 0.0083

SubjectDistanceRange: 0

SceneCaptureType: 0

DigitalZoomRatio: 0

WhiteBalance: 0

ExposureMode: 1

CustomRendered: 0

YCbCrPositioning: 2

DateTime: '2011:04:05 00:36:45'

Software: 'R1FA012 12175563_GENERIC_HS_YO'

ResolutionUnit: 2

YResolution: 72

XResolution: 72

Model: 'W395'

Make: 'Sony Ericsson'

Thumbnail: [1x1 struct]

Answer 2

[Image Analyst]

I'll try to make my answer almost as brief as your question. If it's not stored in the exif info, then.... This is done in forensics all the time. Look it up. You need to know something in the image, like known sizes of measurable objects (in the scene and on your sensor), and known distances in the scene, and/or known angles. Then it's just geometry and optics.