arudinoで撮った写真をPCに保存したい。

arudinoUNOとLinkSpriteシリアル接続JPEGカラーカメラとプロセッシングを用いてカメラの撮影をしています。
そこでカメラで撮った画像をSDカードに保存はできたんですが、パソコンにjpg画像を保存することはできましたが、
画像を開くことができません。
画像をテキストで開いたところバイナリーデータがでました。

#include <SoftwareSerial.h>
#include <SD.h>

 
byte ZERO = 0x00;
 
byte incomingbyte;
SoftwareSerial mySerial(5,6);          // Set Arduino pin 4 and 5 as softserial
 
long int a=0x0000,j=0,k=0,count=0,i=0;
uint8_t MH,ML;
boolean EndFlag=0;
 
File  myFile;
 
void SendResetCmd();
void SetBaudRateCmd();
void SetImageSizeCmd();
void SendTakePhotoCmd();
void SendReadDataCmd();
void StopTakePhotoCmd();
 
void setup()
{
 
Serial.begin(115200);
while (!Serial) {
; // wait for serial port to connect. Needed for Leonardo only
}
 
mySerial.begin(38400);
 
Serial.print("Initializing SD card...");
// On the Ethernet Shield, CS is pin 4. It's set as an output by default.
// Note that even if it's not used as the CS pin, the hardware SS pin
// (10 on most Arduino boards, 53 on the Mega) must be left as an output
// or the SD library functions will not work.
pinMode(10, OUTPUT);
 
if (!SD.begin(4)) {
Serial.println("initialization failed!");
return;
}
Serial.println("initialization done.");
 
}
 
void loop()
{
 
byte a[32];
int ii;

SendResetCmd();
delay(4000);                            //Wait 2-3 second to send take picture command
 
SendTakePhotoCmd();
 
while(mySerial.available()>0)
{
incomingbyte=mySerial.read();
}
 
myFile = SD.open("pic58.jpg", FILE_WRITE); //<strong><span style="color: #ff0000;">The file name should not be too long</span></strong>
 
while(!EndFlag)
{
j=0;
k=0;
count=0;
SendReadDataCmd();
 
delay(20); //250 for regular
 
while(mySerial.available()>0)
{
incomingbyte=mySerial.read();
k++;
if((k>5)&&(j<32)&&(!EndFlag))
{
a[j]=incomingbyte;
if((a[j-1]==0xFF)&&(a[j]==0xD9))     //tell if the picture is finished
EndFlag=1;
j++;
count++;
}
}
 
for(j=0;j<count;j++)
{
if(a[j]<0x10)
Serial.print("0");
Serial.print(a[j],HEX);           // observe the image through serial port
Serial.print(" ");
}
 
for(ii=0; ii<count; ii++)
myFile.write(a[ii]);
 
Serial.println();
 
i++;
 
}
 
myFile.close();
 

 
while(1);
}

 
void SendResetCmd()
{
mySerial.write(0x56);
mySerial.write(ZERO);
mySerial.write(0x26);
mySerial.write(ZERO);
}
 
void SetImageSizeCmd()
{
mySerial.write(0x56);
mySerial.write(ZERO);
mySerial.write(0x31);
mySerial.write(0x05);
mySerial.write(0x04);
mySerial.write(0x01);
mySerial.write(ZERO);
mySerial.write(0x19);
mySerial.write(0x11);
}
 
void SetBaudRateCmd()
{
mySerial.write(0x56);
mySerial.write(ZERO);
mySerial.write(0x24);
mySerial.write(0x03);
mySerial.write(0x01);
mySerial.write(0x2A);
mySerial.write(0xC8);
 
}
 
void SendTakePhotoCmd()
{
mySerial.write(0x56);
mySerial.write(ZERO);
mySerial.write(0x36);
mySerial.write(0x01);
mySerial.write(ZERO);
}
 
void SendReadDataCmd()
{
MH=a/0x100;
ML=a%0x100;
mySerial.write(0x56);
mySerial.write(ZERO);
mySerial.write(0x32);
mySerial.write(0x0c);
mySerial.write(ZERO);
mySerial.write(0x0a);
mySerial.write(ZERO);
mySerial.write(ZERO);
mySerial.write(MH);
mySerial.write(ML);
mySerial.write(ZERO);
mySerial.write(ZERO);
mySerial.write(ZERO);
mySerial.write(0x20);
mySerial.write(ZERO);
mySerial.write(0x0a);
a+=0x20;
}
 
void StopTakePhotoCmd()
{
mySerial.write(0x56);
mySerial.write(ZERO);
mySerial.write(0x36);
mySerial.write(0x01);
mySerial.write(0x03);
}

proccesing用
import processing.serial.*;//proccesingでシリアル通信を行う

Serial myPort;
String filename = "photo.jpg";
byte count = 0;
byte[] photo = {
};
Boolean readData = false;
PImage captureImage;

void setup()
{
  size(640,480);
  println( Serial.list() );
  //Serial.list()[3]は環境に合わせて変更すること。
  myPort = new Serial( this, Serial.list()[0], 115200 );
}

void draw()
{
  byte[] buffer = new byte[64];
  if( readData )
  {
    while( myPort.available() > 0 )
    {
      int readBytes = myPort.readBytes( buffer );
      print( "Read " );
      print( readBytes );
      println( " bytes ..." );
      for( int i = 0; i < readBytes; i++ )
      {
        photo = append( photo, buffer[i] );
      }
    }
  }
  else
  {
    while( myPort.available() > 0 )
    {
      print( "COM Data: " );
      println( myPort.readString() );
    }
  }
}

void keyPressed()
{
  if( photo.length > 0 ) {
    readData = false;
    print( "Writing to disk " );
    print( photo.length );
    println( " bytes ..." );
    filename = "photo" + count + ".jpg";
    saveBytes( filename, photo );
    println( "DONE!" );
    photo = new byte[0];
    captureImage = loadImage(filename);
    image(captureImage, 0, 0);
    count++;
  }
  else {
    readData = true;
    myPort.write(0);
    println( "Waiting for data ..." );
  }
}