Color Photogrammetric Scanner "DeltaScan"


There are different scanner models on the same mechanical basis. All scanners have the same resolution, geometric and radiometric parameters, etc. First, professional model has fully automatic film-roll system, second, has manual roll. All the models can scan cut images.
Standard scanner models are intended for roll-films up to 250 mm wide and 168 mm in diameter. It can scan cut images up to 300x300 mm in size.
Special, large size model is intended for 300x450 mm satellite images and satellite 300 mm wide films.

 

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Technical specification

CCD Pixel size

8µm

Geometric resolution 

1µm

Geometric accuracy (RMS) 

±2µm

Maximal optical density 

3.4D

Optical density range

 2.7D

Radiometric resolution

12/8 bits per channel

Maximal scanning area 

320x320 mm or 320x450 mm

Maximal roll diameter

168 mm 

Roll film scanning 

Up to 250 or 300 mm wide

CCD-sensor 

Color SONY 3x5300x8

Light source 

Power LED array

Scanning of non-transparent material 

Optional

Output formats 

Tiled TIFF, Tiled TIFF(JPEG), BMP 
Color 24bit, b/w 8bit

Typical scanning time for standard 230x230 mm photo

Pixel size, 
µm

Black-and-white 8bit

Color 24bit

230x230 300x300 230x230 300x300
Time
min
Size
Mb
Time
min
Size
Mb
Time
min
Size
Mb
Time
min
Size
Mb
8 12 788 20 1340 30 2368 52 4024
16 6 197 12 335 15 592 25 1006
32 4 49 7 84 9 148 15 252

Geometric parameters

The scanner provides a high resolution, which is 8 µm (3175dpi).

Root mean square error of scanning does not exceed ±2 µm. The value of root mean square error is determined by scanning and measuring the control grid;

Scanner is supplied with a unit for scanning roll films up to 250 mm wide (300 mm for 300x450 model).

 

Radiometric parameters

Scanner is equipped with a SONY color linear CCD-sensor and a light source based on a power LED array: components that provide superb quality of output images;

Controller of the CCD-sensor provides an internal 12-bit storage for intensities within each color channel that is transformed by hardware into 8-bit output;

Scanner provides scanning of both color and black-and-white materials and the scanning software stores output as True Color (24 bit) or gray scale (8 bit) image files;

The scanning software automatically detects optimal values of exposition, contrast and gamma for each color channel;

Scanner can perform scanning in two modes: density linear and intensity linear, which provide optimal results for photographs of any quality;

Scanning time for a 230x230 image in True Color mode at a 16 µm pixel size is 15 minutes;

Scanning time for a 230x230 image in grayscale mode at a 16 µm pixel size is 6 minutes.

 

Scanning software

Works in single image or batch mode (for automatic model);

Supports scanning to TIFF (uncompressed or JPEG) and BMP formats where the pixel size is a multiple of CCD pixel: 8,12,16,24,32 … 128 µm;

Contains a powerful unit for correction and transformation of output images and automatic inner orientation.



Ampliar

Ampliar
Low resolution image samples: aerial 1:5000 and satellite falsecolor.