Scalable transmission method of visual objects segmented by content-base

• US 6,025,877 A
• Filed: 10/28/1997
• Issued: 02/15/2000
• Est. Priority Date: 10/28/1996
• Status: Expired due to Term

• Current Assignee: Uniloc 2017 LLC (SoftBank Group Corp.)
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: Lim, Young-Kwon, Chang, Hee-Dong
• Primary Examiner(s): Peng, John K.
• Assistant Examiner(s): Natnael, Paulos M.
• Application Number:
  US08/959,084
• Time in Patent Office: 840 Days
• Field of Search: 345/327, 345/328, 348/469, 348/395, 348/384, 348/390, 348/845, 348/845.2, 348/397, 348/398, 382/232, 382/243, 382/236, 395/200.66, 395/200.67, 395/200.62, 395/200.61, 395/200.63
• US Class Current: 375/240.01
• CPC Class Codes: G06T 9/001 Model-based coding, e.g. wire frame
• CPC Class Codes: H04N 19/20 using video object coding
• CPC Class Codes: H04N 19/30 using hierarchical techniques, e.g. scalability H04N19/63 takes precedence

Abstract

The present invention relates to a method of scalable transmission of video objects segmented by content-base, comprising the steps of: constituting a set of video objects to be transferred (TxSet); checking as to whether TxSet is the last portion of a video sequence, and then calculating a current transmission rate and a transmission tolerance data size; constituting a video object evaluation group (egs); comparing the data size of the video object evaluation group with a data size of TxSet elements plus a data amount of the video objects of the transmission priority j and then adding the video objection evaluation group (egs) to the TxSet; and checking as to whether the video object of the transmission priority j is the last element of the video object evaluation group i.

Claims

1. A scalable transmission method of video objects segmented by content-base, comprising the following steps of:

constituting a set of video objects to be transferred (hereinafter, referred to as TxSet), and then transmitting said TxSet;

checking as to whether said TxSet is the last portion of a video sequence, and then calculating a current transmission rate (hereinafter, referred to as TxRate) and a transmission tolerance data size;

constituting a video object evaluation group (egs), and setting said TxSet;

comparing the data size of the video object evaluation group (egs) with a data size (hereinafter referred to as TxSetSize) of said TxSet elements plus a data amount (hereinafter, referred to as ObjSize (j)) of the video objects of the transmission priority j, and then adding the video object evaluation group (egs) to the TxSet; and

checking as to whether the video object (hereinafter referred to as Object (j) of the transmission priority j is the last element of the video object evaluation group i.

2. The method as in claim 1, wherein said step of constituting said TxSet, and then transmitting said TxSet includes the following steps of:

constituting said TxSet with a compensated background objects and the video objects whose frame is 0, and then setting the video object evaluation group i at 1; and

transmitting said TxSet.

3. The method as in claim 1, wherein said step of checking as to whether or not said TxSet is the last portion of the video sequence, and then calculating said TxRate and the transmission tolerance data size includes the following steps of:

checking as to whether or not said TxSet is the last portion of the video sequence;

finishing the operation in case said TxSet is the last portion, on the other hand, calculating said TxRate from said TxSet transmission in case said TxSet is not the last portion; and

calculating the transmission data size of the egs, which can be received at the source frame rate under the current transmission speed, by using the following equation;

space="preserve" listing-type="equation">egs=TxRate÷

FRate×

n

wherein, FRate represents the source frame rate, and n represents the number of the frame corresponding to the video object evaluation group, respectively.

4. The method as in claim 1, wherein said step of constituting a video object evaluation group, and setting said TxSet includes the following steps of:

determining the transmission priority of the elements after constituting the video object evaluation group i; and

presetting said TxSet with a set having no element, allocating the transmission priority j as 1, and presetting said TxSetSize with 0, respectively.

5. The method as in claim 1, wherein said step of comparing the data size of the video object evaluation group (egs) with said TxSetSize plus said ObjSize (j), and then changing the number of the TxSet includes of the following steps of:

checking whether the TxSetSize plus said Object (j) is smaller than or equal to the transmission data size of the video object evaluation group (egs);

returning to the step of transmitting said TxSet after changing i to i+1 in case said TxSetSize plus said Object (j) is larger than the transmission data size of the video object evaluation group (egs); and

adding said Object (j) to said TxSet, and also adding said ObjSize (j) to said TxSetSize in case said TxSetSize plus said Object (j) is smaller than or equal to the transmission data size of the video object evaluation group (egs).

6. The method as in claim 1, wherein said step of checking as to whether or not said Object (j) is the last element of the video object evaluation group i includes the following steps of:

checking as to whether or not said Object (j) is the last element of the transmission data size of the video object evaluation group i;

returning to step of checking whether said TxSetSize plus said Object (j) is smaller than or equal to the transmission data size of the video object evaluation group (egs) after changing j to j+1 in case said Object (j) is not the last element; and

returning to step of transmitting said TxSet after changing i to i+1 in case said Object (j) is the last element.

7. The method as in claim 4, wherein said transmission priority of the elements is determined by the transmission priority ranking, and then the encoding type, i.e., in the order of I type, P type and B type.