System and method for providing high performance image magnification in a web browser

• US 6,731,285 B2
• Filed: 01/11/2001
• Issued: 05/04/2004
• Est. Priority Date: 01/11/2001
• Status: Active Grant

• Current Assignee: Uniloc 2017 LLC (SoftBank Group Corp.)
• Original Assignee: International Business Machines Corporation
• Inventors: Matchen, Paul M.
• Primary Examiner(s): Nguyen, Phu K.
• Application Number:
  US09/757,613
• Publication Number:
  US 20020089502A1
• Time in Patent Office: 1,209 Days
• Field of Search: 345/428, 345/629, 345/634, 345/704, 345/762, 382/128
• US Class Current: 345/428
• CPC Class Codes: G06T 3/40 Scaling of whole images or parts thereof, e.g. expanding or contracting

Abstract

High resolution details of an image can be accessed through manipulation of a cursor (or data points) on a reduced resolution display. The coordinates of the cursor on the reduced resolution image reference coordinates of a stored high resolution image. As the cursor moves about the reduced resolution image a portion of the high resolution image can be constantly displayed. The portion displayed depends upon cursor coordinates. The portion displayed may also be zoomed in or out.

Claims

1. A computer system for providing high performance image magnification in a Web browser comprising:

means of acquiring and storing an ultra high resolution image;

means for converting the ultra high resolution image to a browser-supported format;

means for creating a second, reduced resolution image from the ultra high resolution image for screen display;

means for converting the reduced resolution image to a browser-supported format;

means for loading the converted ultra high resolution and reduced resolution images into a browser memory;

means for displaying the converted reduced resolution image on a browser screen;

an input device for pointing to a location on the browser screen;

means responsive to the input device for determining a portion of the converted ultra high resolution image to overlay on the browser screen; and

means for displaying the portion of the converted ultra high resolution image on the browser screen at the location pointed to by the pointing device.

2. The computer system as recited in claim 1, wherein the ultra high resolution image is acquired by a medical imaging device.

3. The computer system as recited in claim 1, wherein the ultra high resolution image is acquired by a high resolution optical scanner.

4. The computer system as recited in claim 1, wherein the means responsive to the input device for determining a portion of the converted ultra high resolution image to overlay on the browser screen crops the converted ultra high resolution image to predetermined dimensions.

5. The computer system as recited in claim 4, wherein the means for displaying the portion of the converted ultra high resolution image on the browser screen at the location pointed to by the pointing device translates the cropped converted ultra high resolution image to offset points determined by a location of the pointing device.

6. A computer implemented method for providing high performance image magnification in a Web browser comprising the steps of:

acquiring and storing an ultra high resolution image;

converting the ultra high resolution image to a browser-supported format;

creating a second, reduced resolution image from the ultra high resolution image;

converting the reduced resolution image to a browser-supported format;

loading the converted ultra high resolution and reduced resolution images into a browser memory;

displaying the converted reduced resolution image on a browser screen;

receiving position information from an input device pointing to a location on the browser screen;

determining from the position information a portion of the converted ultra high resolution image to overlay on the browser screen; and

displaying the portion of the converted ultra high resolution image on the browser screen at the location pointed to by the pointing device.

7. The computer implemented method as recited in claim 6, wherein the step of acquiring an ultra high resolution image is performed by a medical imaging device.

8. The computer implemented method as recited in claim 6, wherein the step of acquiring an ultra high resolution image is performed by a high resolution optical scanner.

9. The computer implemented method as recited in claim 6, wherein the step of determining from the position information a portion of the converted ultra high resolution image to overlay on the browser screen includes the step of cropping the converted ultra high resolution image to predetermined dimensions.

10. The computer implemented method as recited in claim 9, wherein the step of displaying the portion of the converted ultra high resolution image on the browser screen at the location pointed to by the pointing device includes the step of translating the cropped converted ultra high resolution image to offset points determined by the position information.