Method and system for processing image data based on pixel characteristics

• US 5,245,701 A
• Filed: 10/10/1990
• Issued: 09/14/1993
• Est. Priority Date: 10/10/1990
• Status: Expired due to Fees

• Current Assignee: Fuji Xerox Company Limited (Xerox Holdings Corp.)
• Original Assignee: Fuji Xerox Company Limited (Xerox Holdings Corp.)
• Inventors: Matsumoto, Fuminari
• Primary Examiner(s): Harkcom, Gary V.
• Assistant Examiner(s): HUYNH, BA
• Application Number:
  US07/595,808
• Time in Patent Office: 1,070 Days
• Field of Search: 395/129, 395/165, 395/115, 395/144, 395/146
• US Class Current: 345/619
• CPC Class Codes: G09G 5/393 Arrangements for updating the contents of the bit-mapped memory
• CPC Class Codes: H04N 1/40 Picture signal circuits H04N1/387 takes precedence

Abstract

An image processing system receives different types of image data with different number of bits per pixel, stores the image data into a memory, and applies given image processing steps to the image data stored therein. A control device is included in the image processing system. The control device determines the positions of pixels to be image processed, the number of pixels of one line, and the number of lines. For each line a least common multiple (LCM) of the number of bits of the pixel (B_m) and the number of bits per access of the image data used in the image processing system (B₀) is calculated, and the control device executes preset image processing programs under the determined conditions.

Claims

1. A method for processing image data in an image processing system, the image processing system having means for receiving different types of image data, the image data including pixels having graphical coordinate positions and different numbers of bits per pixel, storing the image data into a memory, and performing an edit function on the stored data,

initiating the edit function;

locating the graphical coordinate positions of pixels to be image processed by the edit function;

determining the number of bits in each line of the pixels to be image processed by the edit function;

calculating for each line of the pixels to be image processed by the edit function the least common multiple of the number of bits per; and

adjusting the graphical coordinate positions of the pixels to be image processed in accordance with the number of bits in each line and the least common multiple so that the number of bits in each line equals a multiple of the least common multiple.

2. The method of claim 1 wherein the edit function is a cut and paste processing of the image data.

3. The method claim 1, wherein the edit function is a trimming processing of the image data.

4. The method of claim 1 wherein the edit function is a masking processing of the image data.

5. The method of claim 1 further including the step of outputting the processed image data.

6. The method claim 1 in which the bits per pixel include at least one bit indicative of density or reflectivity of said pixel.

7. The method claim 1 in which the bits per pixel include at least one bit indicative of color information of said pixel.

8. The method claim 1 in which the bits per pixel include at least one bit indicative of attribute information of said pixel.

9. An image processing system that receives different types of image data having different numbers of bits per pixel, that stores the image data into a memory in a plurality of memory areas, and that performs given image processing operations to the image data stored therein, said system comprising:

a user interface command device for selecting an image processing operation to be applies to specified image data stored in the memory at a predetermined memory area;

a control device for determining information from the specified image data and for performing the image processing operation selected by said user interface command device, wherein said control device determines said information from the specified image data in accordance with the least common multiple of the number of bits per pixel and the number of bits per access of the image data used in the image processing system.

10. An image processing system as claimed in claim 9, wherein the predetermined memory area corresponds to a determination of a position of pixels.

11. An image processing system as claimed in claim 9, wherein said predetermined memory area corresponds to a determination of number of bits per one line.

12. An image processing system as claimed in claim 9, wherein said memory corresponds to a one page memory.