# US 9,521,428 B2 · Method, device and system for resizing original depth frame into resized depth frame

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- Number: US 9,521,428 B2
- Document ID: US9521428B2
- Status: Granted
- Kind: B2
- Application number: 14/504,901
- Filed: 2014-10-02
- Published: 2015-04-02
- Granted: 2016-12-13
- Earliest claimed: 2013-10-02
- Assignees: National Cheng Kung University
- Applicants: National Cheng Kung University
- Inventors: Jar-Ferr Yang; Hung-Ming Wang; Hsi-Chun Tseng
- Web page: https://patentgrep.com/patent/US9521428B2

## CPC

- H04N 19/597: specially adapted for multi-view video sequence encoding
- G06T 3/4023: based on decimating pixels or lines of pixels; based on inserting pixels or lines of pixels
- H04N 13/139: Format conversion, e.g. of frame-rate or size
- H04N 13/161: Encoding, multiplexing or demultiplexing different image signal components (for multi-view video sequence encoding H04N19/597)
- H04N 19/59: involving spatial sub-sampling or interpolation, e.g. alteration of picture size or resolution
- H04N 2213/003: Aspects relating to the "2D+depth" image format
- H04N 2213/005: Aspects relating to the "3D+depth" image format
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION
- G06T: IMAGE DATA PROCESSING OR GENERATION, IN GENERAL

## Abstract

A method, a device and a system for resizing an original depth frame into a resized depth frame. The method for resizing an original depth frame into a resized depth frame includes the steps of: obtaining two sub-pixel values from at least two pixels of the original depth frame, respectively; and storing the two sub-pixel values into corresponding two sub-pixels of one pixel of the resized depth frame, respectively.

## Claims

### Claim 1

A method for resizing an original depth frame into a resized depth frame, comprising steps of:
retrieving one sub-pixel value from each of pixels of the original depth frame to obtain a plurality of retrieved sub-pixel values, wherein the sub-pixel values of the same pixel of the original depth frame are the same; and
storing the three retrieved sub-pixel values into three sub-pixels of one pixel of the resized depth frame, respectively.

### Claim 2 (depends on 1)

The method of claim 1, wherein the original depth frame is a gray-level frame, and the sub-pixel values of each pixel of the gray-level frame are the same.

### Claim 3 (depends on 1)

The method of claim 1, wherein the size of the resized depth frame is ⅓ of the original depth frame along a column direction.

### Claim 4 (depends on 1)

The method of claim 1, wherein the size of the resized depth frame is ⅓ of the original depth frame along a row direction.

### Claim 5

A device for resizing an original depth frame into a resized depth frame, comprising:
a pixel retrieving unit for retrieving one sub-pixel value from each of pixels of the original depth frame to obtain a plurality of retrieved sub-pixel values, wherein the sub-pixel values of the same pixel of the original depth frame are the same; and
a pixel storing unit for storing the three retrieved sub-pixel values into three sub-pixels of one pixel of the resized depth frame, respectively.

### Claim 6 (depends on 5)

The device of claim 5, wherein the original depth frame is a gray-level frame, and the sub-pixel values of each pixel of the gray-level frame are the same.

### Claim 7 (depends on 5)

The device of claim 5, wherein the size of the resized depth frame is ⅓ of the original depth frame along a column direction.

### Claim 8 (depends on 5)

The device of claim 5, wherein the size of the resized depth frame is ⅓ of the original depth frame along a row direction.

### Claim 9

A system for resizing an original depth frame into a resized depth frame, comprising:
a memory unit for storing the original depth frame; and
a processing unit for retrieving one sub-pixel value from each of pixels of the original depth frame to obtain a plurality of retrieved sub-pixel values and storing the three retrieved sub-pixel values into three sub-pixels of one pixel of the resized depth frame, respectively, wherein the sub-pixel values of the same pixel of the original depth frame are the same.

### Claim 10 (depends on 9)

The system of claim 9, wherein the original depth frame is a gray-level frame, and the sub-pixel values of each pixel of the gray-level frame are the same.

### Claim 11 (depends on 9)

The system of claim 9, wherein the size of the resized depth frame is ⅓ of the original depth frame along a column direction.

### Claim 12 (depends on 9)

The system of claim 9, wherein the size of the resized depth frame is ⅓ of the original depth frame along a row direction.