METHOD AND SYSTEM FOR UTILIZING TRANSFORMATION MATRICES TO PROCESS RASTERIZED IMAGE DATA

• US 20100156938A1
• Filed: 12/11/2009
• Published: 06/24/2010
• Est. Priority Date: 12/18/2008
• Status: Active Grant

• Current Assignee: Xerox Corporation (Xerox Holdings Corp.)
• Original Assignee: Xerox Corporation (Xerox Holdings Corp.)
• Inventors: Conlon, Paul Roberts
• Granted Patent: US 9,652,820 B2
• Time in Patent Office: Days
• US Class Current: 345/649
• CPC Class Codes: G06T 3/02 Affine transformations for image registration G06T3/147; for image mosaicing G06T3/4038

Abstract

A method and system render rasterized data by receiving non-rasterized page description language data and a corresponding transformation matrix representing transformation operations to be performed. The non-rasterized page description language data is rasterizing to create rasterized data. The corresponding transformation matrix is decomposed into a plurality of individual transformation operation matrices and a discrete transformation operation value, from each corresponding individual transformation operation matrix, is generated for each transformation operation to be performed upon the rasterized data. The transformation operations are performed upon the rasterized data based upon the generated discrete transformation operation values.

Claims

1. A method of rendering rasterized data, comprising:

receiving a non-rasterized page description language data and a source transformation matrix representing source transformation operations, the source transformation operations being a source rotation transformation operation, a source scaling transformation operation, and a source translation transformation operation;

rasterizing the non-rasterized page description language data;

determining an order of transformation operations to be performed upon the rasterized data;

generating, from the source transformation matrix, a rotation transformation matrix and a scaling transformation matrix based upon a rotation scaling order of the determined order of transformation operations;

generating a translation transformation matrix from the generated rotation and scaling transformation matrices;

creating a target transformation matrix by matrix multiplying the generated rotation transformation matrix, the generated scaling transformation matrix, and the generated transformation operation in a matrix order corresponding to the determined order of transformation operations to be performed upon the rasterized data;

decomposing the corresponding transformation matrix into a rotation transformation operation matrix, a first scaling transformation operation matrix, and a translation transformation operation matrix;

decomposing the first scaling transformation operation matrix into a shear transformation operation matrix and a second scaling transformation operation matrix;

generating a discrete rotation transformation operation value from the rotation transformation operation matrix;

generating a discrete scaling transformation operation value from the second scaling transformation operation matrix;

generating a discrete translation transformation operation value from the translation transformation operation matrix;

generating a discrete shear transformation operation value from the shear transformation operation matrix; and

performing transformation operations upon the rasterized data based upon the generated discrete transformation operation values.

2. The method as claimed in claim 1, wherein the corresponding transformation matrix is decomposed in an order corresponding to an order of the transformation operations being performed upon the rasterized data.

3. The method as claimed in claim 1, wherein the first scaling transformation matrix is decomposed in an order corresponding to an order of the scaling transformation operation and shear transformation operation being performed upon the rasterized data.

4. The method as claimed in claim 1, wherein the source transformation matrix is a transformation matrix created by an ordered matrix multiplication of a plurality of individual transformation operation matrices, each individual transformation operation matrix representing a rotation transformation operation, a scaling transformation operation, or a source translation transformation operation.

5. A method of controlling imaging operations of a rendering device, comprising:

receiving a non-rasterized page description language data to be rendered;

creating a source transformation matrix representing source transformation operations, the source transformation operations being a source rotation transformation operation, a source scaling transformation operation, and a source translation transformation operation;

rasterizing the received image;

determining an order of transformation operations to be performed upon the rasterized data;

generating, from the source transformation matrix, a rotation transformation matrix and a scaling transformation matrix based upon a rotation scaling order of the determined order of transformation operations;

generating a translation transformation matrix from the generated rotation and scaling transformation matrices;

creating a target transformation matrix by matrix multiplying the generated rotation transformation matrix, the generated scaling transformation matrix, and the generated transformation operation in a matrix order corresponding to the determined order of transformation operations to be performed upon the rasterized data;

decomposing the transformation matrix into a rotation transformation operation matrix, a first scaling transformation operation matrix, and a translation transformation operation matrix;

decomposing the first scaling transformation operation matrix into a shear transformation operation matrix and a second scaling transformation operation matrix;

generating a discrete rotation transformation operation value from the rotation transformation operation matrix;

generating a discrete scaling transformation operation value from the second scaling transformation operation matrix;

generating a discrete translation transformation operation value from the translation transformation operation matrix;

generating a discrete shear transformation operation value from the shear transformation operation matrix; and

transforming the rasterized data based upon the generated discrete transformation operation values.

6. The method as claimed in claim 5, wherein the transformation matrix is decomposed in an order corresponding to an order of the transformation operations being performed upon the rasterized data.

7. The method as claimed in claim 5, wherein the first scaling transformation matrix is decomposed in an order corresponding to an order of the scaling transformation operation and shear transformation operation being performed upon the rasterized data.

8. The method as claimed in claim 5, wherein the transformation matrix is a transformation matrix created by an ordered matrix multiplication of a plurality of individual transformation operation matrices, each individual transformation operation matrix representing a rotation transformation operation, a scaling transformation operation, or a source translation transformation operation.

9. A method of controlling imaging operations of a rendering device, comprising:

receiving a non-rasterized page description language data to be rendered;

rasterizing the received image;

creating, post rasterization, a source transformation matrix representing transformation operations;

determining an order of transformation operations to be performed upon the rasterized data;

generating, from the source transformation matrix, a rotation transformation matrix and a scaling transformation matrix based upon a rotation scaling order of the determined order of transformation operations;

generating a translation transformation matrix from the generated rotation and scaling transformation matrices;

creating a target transformation matrix by matrix multiplying the generated rotation transformation matrix, the generated scaling transformation matrix, and the generated transformation operation in a matrix order corresponding to the determined order of transformation operations to be performed upon the rasterized data;

decomposing the transformation matrix into a rotation transformation operation matrix, a first scaling transformation operation matrix, and a translation transformation operation matrix;

decomposing the first scaling transformation operation matrix into a shear transformation operation matrix and a second scaling transformation operation matrix;

generating a discrete rotation transformation operation value from the rotation transformation operation matrix;

generating a discrete scaling transformation operation value from the second scaling transformation operation matrix;

generating a discrete translation transformation operation value from the translation transformation operation matrix;

generating a discrete shear transformation operation value from the shear transformation operation matrix; and

transforming the rasterized data based upon the generated discrete transformation operation values.

10. The method as claimed in claim 9, wherein the transformation matrix is decomposed in an order corresponding to an order of the transformation operations being performed upon the rasterized data.

11. The method as claimed in claim 9, wherein the first scaling transformation matrix is decomposed in an order corresponding to an order of the scaling transformation operation and shear transformation operation being performed upon the rasterized data

12. The method as claimed in claim 31, wherein the transformation matrix is a transformation matrix created by an ordered matrix multiplication of a plurality of individual transformation operation matrices, each individual transformation operation matrix representing a rotation transformation operation, a scaling transformation operation, or a source translation transformation operation.

13. A system for rendering rasterized data, comprising:

a rasterizing circuit to rasterize a non-rasterized page description language data, the non-rasterized page description language data having a source transformation matrix representing source transformation operations, the source transformation operations being a source rotation transformation operation, a source scaling transformation operation, and a source translation transformation operation;

a processor to determine an order of transformation operations to be performed upon the rasterized data; and

a processor generating, from the source transformation matrix, a rotation transformation matrix and a scaling transformation matrix based upon a rotation scaling order of the determined order of transformation operations;

said processor generating a translation transformation matrix from the generated rotation and scaling transformation matrices;

said processor creating a target transformation matrix by matrix multiplying the generated rotation transformation matrix, the generated scaling transformation matrix, and the generated transformation operation in a matrix order corresponding to the determined order of transformation operations to be performed upon the rasterized data;

said processor decomposing the corresponding transformation matrix into a rotation transformation operation matrix, a first scaling transformation operation matrix, and a translation transformation operation matrix;

said processor decomposing the first scaling transformation operation matrix into a shear transformation operation matrix and a second scaling transformation operation matrix;

said processor generating a discrete rotation transformation operation value from the rotation transformation operation matrix;

said processor generating a discrete scaling transformation operation value from the second scaling transformation operation matrix;

said processor generating a discrete translation transformation operation value from the translation transformation operation matrix;

said processor generating a discrete shear transformation operation value from the shear transformation operation matrix;

a plurality of post-rasterization transformation circuits, operatively connected to said rasterizing circuit and said transformation matrix decomposing circuit, to perform transformation operations upon the rasterized data.

14. The system as claimed in claim 13, wherein the corresponding transformation matrix represents a device independent transformation operation.

15. The system as claimed in claim 13, wherein the corresponding transformation matrix represents device independent rotation, scaling, shear, and translation operations.

16. The system as claimed in claim 13, wherein the source transformation matrix is a transformation matrix created by an ordered matrix multiplication of a plurality of individual transformation operation matrices, each individual transformation operation matrix representing a rotation transformation operation, a scaling transformation operation, or a source translation transformation operation.

17. A system for rendering rasterized data, comprising:

a rasterizing circuit to rasterize a non-rasterized page description language data;

a transformation matrix circuit for generating a source transformation matrix representing source transformation operations, the source transformation operations being a source rotation transformation operation, a source scaling transformation operation, and a source translation transformation operation;

a processor to determine an order of transformation operations to be performed upon the rasterized data; and

a processor generating, from the source transformation matrix, a rotation transformation matrix and a scaling transformation matrix based upon a rotation scaling order of the determined order of transformation operations;

said processor generating a translation transformation matrix from the generated rotation and scaling transformation matrices;

said processor creating a target transformation matrix by matrix multiplying the generated rotation transformation matrix, the generated scaling transformation matrix, and the generated transformation operation in a matrix order corresponding to the determined order of transformation operations to be performed upon the rasterized data;

said processor decomposing the corresponding transformation matrix into a rotation transformation operation matrix, a first scaling transformation operation matrix, and a translation transformation operation matrix;

said processor decomposing the first scaling transformation operation matrix into a shear transformation operation matrix and a second scaling transformation operation matrix;

said processor generating a discrete rotation transformation operation value from the rotation transformation operation matrix;

said processor generating a discrete scaling transformation operation value from the second scaling transformation operation matrix;

said processor generating a discrete translation transformation operation value from the translation transformation operation matrix;

said processor generating a discrete shear transformation operation value from the shear transformation operation matrix;

a plurality of post-rasterization transformation circuits, operatively connected to said rasterizing circuit and said transformation matrix decomposing circuit, to perform transformation operations upon the rasterized data.

18. The system as claimed in claim 17, wherein the transformation matrix represents a device independent transformation operation.

19. The system as claimed in claim 17, wherein the transformation matrix represents device independent rotation, scaling, shear, and translation operations.

20. The system as claimed in claim 17, wherein the transformation matrix is a transformation matrix created by an ordered matrix multiplication of a plurality of individual transformation operation matrices, each individual transformation operation matrix representing a rotation transformation operation, a scaling transformation operation, or a source translation transformation operation.