Rapid ARM-based JPEG Processorreport of HW/SW Co-Design

Professor: 陳少傑

Students: R91921061 林耿賢 R91921062 李源華 P91921001 陳宗裕

Outline Block of ARM-based JPEG Processor JPEG Software Demo Benchmark of JPEG Software Why use hardware 2D DCT? Algorithm of Row-Column decomposition 2D DCT. Matlab Demo of this Algorithm Comparison Reference

Rapid ARM-based JPEG Processor

Integrate which we learn in the HW/SW Co-Design and ARM Lab.Embedded System/ Real Time Operation System.ARM 32-bits processor/ AMBA Bus.JPEG Algorithm.

Block Diagram 1ARM Core ARM7TDMI

On-ChipRAM

DMAMaster

Bridge

AHB

UART

Timer

PIO

Keypad

APBMemory Interface

A typical AMBA systemAHB CMOS Sensor

Wrapper

Block Diagram 2

ARM7TDMIRun(uC/OSII, JPEG Encoder..) DRAM

AHB CMOS Sensor

Wrapper

ARM semi-Hoster

AHB

CMOS Image Sensor

i-Magic Technologies IM88023A

JPEG Algorithm

Color TransformRGB to YUV

Down Sampling DCT Quantization

HuffmanEncoding

JPEG File

BMP File

JPEG Encoder in Mobile Phone

Task 2: Communication Task

Task 1: Read a frame from COMS Sensor and JPEG Encoder

JPEG ARM Software Demo

JPEG Software Demo 1

Peppers.bmp Peppers.jpg

ARM JPEG Encoder

JPEG Software Demo 2

ARM JPEG Encoder

Mandrill.bmp Mandrill.jpg

Benchmark of the ARM JPEG Software

DCT Quant. VLC

Cycles 5000 3000 3000

Block of 2D DCT in ARM-based JPEG Processor

ARM7TDMIRun(uC/OSII, JPEG Encoder ..) DRAM

AHB CMOS Sensor

Wrapper

ARM semi-Hoster

AHB

2D DCT

Product of DSC 1SunPlus – GT8980

Product DSC 2TMS320DSC25

Algorithm of 2D DCT

N

vn

N

umvufnkmk

NnmF

N

u

N

v 2

)12(cos

2

)12(cos),()()(

2),(

1

0

1

0

Tc

TTc

Tc

T

CfCfFCffassume

CfCF

)(

The original 1D DCT

Row-Column decomposition (RCD) method

Transposition Memory

1-D DCT

Inp

ut

Bu

ffe

r

Ou

tpu

t B

uff

er

Matlab Demo of 2D DCTOur Algorithm

Algorithm of 1D DCT 1

)cos()cos( xx

)2

cos()2

cos( xx

Algorithm of 1D DCT 2

)7()0(

)6()1(

)5()2(

)4()3(

)4()3(

)5()2(

)6()1(

)7()0(

0000

0000

0000

0000

0000

0000

0000

0000

)7(

)3(

)5(

)1(

)6(

)2(

)4(

)0(

ff

ff

ff

ff

ff

ff

ff

ff

geca

cgae

eagc

aceg

fbbf

dddd

bffb

dddd

y

y

y

y

y

y

y

y

)16

7cos(

8

2

)16

6cos(

8

2,)

16

5cos(

8

2

)16

4cos(

8

2,)

16

3cos(

8

2

)16

2cos(

8

2,)

16cos(

8

2

g

fe

dc

ba

Where

Algorithm of 1D DCT 3

))4()3(())7()0((

)))5(2(())6()1((

)6(

)2(

ffff

ffff

fb

bf

y

y

))5()2()6()1(())4()3()7()0((

))5()2()6()1(())4()3()7()0((

0

0

)4(

)0(

ffffffff

ffffffff

d

d

y

y

Algorithm of 1D DCT 4

Algorithm of 1D DCT 5

Algorithm of 1D DCT 6

Architecture Design for Proposed

Transposition Memory 1

Architecture Design for Proposed

Transposition Memory 2

Comparison1D DCT

Compare with software