Exhibit 3

Case 2:23-cv-00479-JRG Document 1-3 Filed 10/12/23 Page 1 of 15 PageID #: 46
Infringement Claim Chart for U.S. Pat. No. US7256899B1 v. SCANTECH (“Defendant”)

(See Accused Product List at end of chart for models)

Claim16 Evidence

16. A system for 

acquiring an 

approximation of a 

surface geometry of 

a 3-dimensional 

object comprising:

The SCANTECH iReal 2E Color 3D Scanner is a system for acquiring an approximation

of a surface geometry of a 3-dimensional object.

For example, the iReal 2E Color 3D Scanner is a 3D scanning device for measuring

the three-dimensional shape of an object using projected light patterns and a camera

system. The iReal 2E Color 3D Scanner includes a scanner head that projects a series

of light patterns (e.g. parallel stripes) onto the scan target. When light projects onto

the object's surface, the patterns become distorted. The camera system captures

these images and sends them for processing to a computer executing 3D scanning

software.

Source: https://www.ireal3dscan.com/main/1start/about.html

1

Case 2:23-cv-00479-JRG Document 1-3 Filed 10/12/23 Page 2 of 15 PageID #: 47
Source: https://www.ireal3dscan.com/main/1start/about.html

Source: https://www.ireal3dscan.com/main/1start/about.html

2

Case 2:23-cv-00479-JRG Document 1-3 Filed 10/12/23 Page 3 of 15 PageID #: 48
Source: https://www.ireal3dscan.com/main/1start/about.html

means for 

establishing an 

object coordinate 

system in known 

relationship to the 

object;

The SCANTECH iReal 2E Color 3D Scanner includes means for establishing an object

coordinate system in known relationship to the object.

For example, the iReal 2E Color 3D Scanner includes a computer to establish an

object coordinate system using an image of the target object, having reference

features thereon, and the position of the scanner head when the image was

3

Case 2:23-cv-00479-JRG Document 1-3 Filed 10/12/23 Page 4 of 15 PageID #: 49
captured.

Source: https://www.ireal3dscan.com/main/1start/about.html

Source: https://www.ireal3dscan.com/main/1start/about.html

4

Case 2:23-cv-00479-JRG Document 1-3 Filed 10/12/23 Page 5 of 15 PageID #: 50
means for projecting 

a pattern of 

structured light of 

known geometry 

onto the object;

The SCANTECH iReal 2E Color 3D scanner includes means for projecting a pattern of

structured light of known geometry onto the object.

For example, the iReal 2E Color 3D scanner includes a light source (e.g. a blue light

LED) that projects a series of light patterns (e.g. parallel stripes) onto the scan target.

Source: https://www.ireal3dscan.com/main/1start/about.html

Source: https://www.ireal3dscan.com/main/2user/calibration.html

5

Case 2:23-cv-00479-JRG Document 1-3 Filed 10/12/23 Page 6 of 15 PageID #: 51
means for forming an

image of an 

intersection of the 

pattern of structured 

light with the object;

The SCANTECH iReal 2E Color 3D scanner includes means for forming an image of an

intersection of the pattern of structured light with the object.

For example, the iReal 2E Color 3D scanner includes a camera system. The camera

system includes an electro-optical image sensor (e.g. CMOS or CCD image sensor

depending on the model) that captures the patterns of the light projected onto the

target object. 

Source: https://www.ireal3dscan.com/main/1start/about.html

6

Case 2:23-cv-00479-JRG Document 1-3 Filed 10/12/23 Page 7 of 15 PageID #: 52
processing means for

generating a set of 

data characterizing 

the intersection 

relative to a position 

of the pattern of 

light;

The SCANTECH iReal 2E Color 3D scanner includes processing means for generating a

set of data characterizing the intersection relative to a position of the pattern of light.

For example, the non-contact scanner includes an image processor for processing the

images of light patterns captured by the camera system.

Source: https://www.ireal3dscan.com/products/ireal-2e-3d-scanner/

7

Case 2:23-cv-00479-JRG Document 1-3 Filed 10/12/23 Page 8 of 15 PageID #: 53
Source: https://it3d.com/en/3d-scanners/color/scantech-ireal-2e/

transmitting means 

for transmitting some

portion of the image 

or intersection data 

to a receiver;

The SCANTECH iReal 2E Color 3D scanner includes transmitting means for

transmitting some portion of the image or intersection data to a receiver.

For example, the iReal 2E Color 3D scanner includes a transmitter (e.g. wireless

Bluetooth transmitter or wired USB transmitter, depending on the model) for

transmitting data associated with the captured images to a processor system.

Source: https://www.ireal3dscan.com/faqs-category/ireal-2e/

8

Case 2:23-cv-00479-JRG Document 1-3 Filed 10/12/23 Page 9 of 15 PageID #: 54
Source: https://www.3d-scantech.com/wp-content/uploads/2022/07/iReal-2E-2022-

Color-3D-Scanner-Brochure.pdf

receiving means for 

receiving the 

transmitted 

processed 

intersection data;

The SCANTECH iReal 2E Color 3D scanner includes receiving means for receiving the

transmitted processed intersection data.

For example, the iReal 2E Color 3D scanner includes a receiver (e.g. wireless

Bluetooth transmitter or wired USB transmitter) is used for receiving data associated

with the captured images to provide the data to a computer for further processing.

Source: https://www.ireal3dscan.com/faqs-category/ireal-2e/

9

Case 2:23-cv-00479-JRG Document 1-3 Filed 10/12/23 Page 10 of 15 PageID #: 55
Source: https://www.3d-scantech.com/wp-content/uploads/2022/07/iReal-2E-2022-

Color-3D-Scanner-Brochure.pdf

tracking means for 

tracking the position 

of the projected 

pattern of structured 

light;

The SCANTECH iReal 2E Color 3D scanner includes tracking means for tracking the

position of the projected pattern of structured light.

For example, the non-contact scanner includes a position indicator for indicating the

position at which a light pattern image was captured in relation to the target object.

Source: https://www.ireal3dscan.com/main/1start/about.html

10

Case 2:23-cv-00479-JRG Document 1-3 Filed 10/12/23 Page 11 of 15 PageID #: 56
means for 

associating each 

intersection datum 

with the position of 

the projected pattern

of light at the time 

the image 

corresponding to the 

datum was formed;

The SCANTECH iReal 2E Color 3D scanner includes means for associating each

intersection datum with the position of the projected pattern of light at the time the

image corresponding to the datum was formed.

For example, a scanner tracking subsystem is used to track the position of the noncontact scanner as it is moved from an initial position to other positions to capture

light pattern images from different locations around the target object.

Source: https://www.3d-scantech.com/wp-content/uploads/2022/07/iReal-2E-2022-

Color-3D-Scanner-Brochure.pdf

transforming means The SCANTECH iReal 2E Color 3D scanner includes transforming means for

11

Case 2:23-cv-00479-JRG Document 1-3 Filed 10/12/23 Page 12 of 15 PageID #: 57
for transforming 

each intersection 

datum into 

coordinates of the 

object coordinate 

system; and

transforming each intersection datum into coordinates of the object coordinate

system.

For example, the computer calculates the X-Y-Z coordinate points of the entire

surface geometry of the target object from the light pattern images as the light

pattern shifts from the initial position.

Source: https://www.ireal3dscan.com/main/1start/about.html

Source: https://it3d.com/en/3d-scanners/color/scantech-ireal-2e/

12

Case 2:23-cv-00479-JRG Document 1-3 Filed 10/12/23 Page 13 of 15 PageID #: 58
accumulating means 

for accumulating the 

transformed 

coordinates to form a

model approximating

the surface geometry

of the object.

The SCANTECH iReal 2E Color 3D scanner includes accumulating means for

accumulating the transformed coordinates to form a model approximating the

surface geometry of the object.

For example, the computer that executes algorithms to align every scan image

automatically to create a highly accurate, complete 3D digital model of the object.

Source: https://www.ireal3dscan.com/main/1start/about.html

Source: https://www.ireal3dscan.com/products/ireal-2e-3d-scanner/

13

Case 2:23-cv-00479-JRG Document 1-3 Filed 10/12/23 Page 14 of 15 PageID #: 59
Source: https://www.ireal3dscan.com/products/ireal-2e-3d-scanner/

Accused Product List

iReal M3

iReal 2E

14

Case 2:23-cv-00479-JRG Document 1-3 Filed 10/12/23 Page 15 of 15 PageID #: 60