MAKALAH PROSES PEMBUATAN RGB PADA SISTEM

(1)

MAKALAH

PROSES PEMBUATAN RGB PADA

SISTEM DIGITAL

Oleh:

Moh Erwan Agus Saputra

111080200199

FAKULTAS TEKNIK

JURUSAN TEKNIK INFORMATIKA

UNIVERSITAS MUHAMMADIYAH SIDOARJO

2014

(2)

SKRIP GAMBAR AWAL

<?php

error_reporting(0);

//============ PENGOLAHAN CITRA 24 BIT ========= /*

Berikut ini adalah contoh coding mengkases citra dan menyimpannya kedalam array berbasi structure/variabel-buatan..

*/

$dewi="asli.jpg"; //nama gambar yang diambil $hasil = getimagesize($dewi); // ukuran awal gambar if(! $hasil)

{

die("File $citra tidak dapat dibuka"); }

else {

//tampilkan informasi data citra print("<IMG SRC=\"$dewi\">"); print("");

print("Lebar Citra = $hasil[0] \n"); print("Tinggi Citra = $hasil[1] \n"); print("Tipe Citra = $hasil[2] \n"); print("String Citra = $hasil[3] \n"); }

$gb=imagecreatefromJPEG($dewi); //membuat gambar yang berasal dari sebuah URL ataupun nama sebuah file

(3)

list($lebar, $tinggi, $type, $attr) = getimagesize($dewi);

//yang akan menghasilkan array informasi dari file gambar yang akan kita resize (yang diset melalui constructor)

//Tampilkan tinggi lebar citra echo "Image width " .$lebar; echo " ";

echo "Image height " .$tinggi; echo " ";

echo "Image type " .$type; echo " ";

echo "Attribute " .$attr; //fungsi membaca citra *.PNG

$im = imagecreatefrompng("asli.jpg");//// Load gambar dasar kami $mhb = imagecolorat($im, 10, 15);

$r = ($mhb >> 16) & 0xFF; $g = ($mhb >> 8) & 0xFF; $b = $mhb & 0xFF; var_dump($r, $g, $b);

//untuk melihat proses di PHP //syntax membaca citra *.JPG $im = imagecreatefromjpeg($dewi); $mhb = imagecolorat($im, 10, 15); $r = ($mhb >> 16) & 0xFF;

$g = ($mhb >> 8) & 0xFF; $b = $mhb & 0xFF; //var_dump($r, $g, $b);

(4)

{

public $R; //untuk red public $G; //untuk green public $B; //untuk blue public $gray; //untuk gray public $teks; //misalnya }

//======================================== //contoh mengakses variabel biasa berbasis struct $data = new datamhb();

$data->R =30; $data->G =15; $data->B =244; $data->gray =40;

//CONTOH mengakses variabel Array D1 berbasis struct $dt[] = new datamhb();

$dt[1]->R =30; $dt[1]->G =15; $dt[1]->B =244; echo $dt[1]->gray =40;

//CONTOH mengakses variabel Array D2 berbasis struct $DATA[][] = new datamhb();

(5)

$im = imagecreatefromjpeg($dewi); $imred = imagecreatefromjpeg($dewi); $imgreen = imagecreatefromjpeg($dewi); $imblue = imagecreatefromjpeg($dewi); $x=0;

$dtmhb[][] = new datamhb(); for($x==0;$x<$lebar-1;$x++) {

$im = imagecreatefromjpeg($dewi); $y=0;

for($y==0;$y<$tinggi-1;$y++) {

//echo "y=". $y . ", x=" . $x . ""; //Ambil Data Citra

$mhb = imagecolorat($im, $x, $y);

//Get mhb disimpan dalam variabel biasa (JADUL) //$r = (int)(($mhb >> 16) & 0xFF); //mode JADUL $red[$x][$y] = (int)(($mhb >> 16) & 0xFF); $green[$x][$y] = (int)(($mhb >> 8) & 0xFF); $blue[$x][$y] = (int)($mhb & 0xFF);

$gray[$x][$y]= (int)(($r+$g+$b)/3);

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//echo "Matrik [$x,$y] R=$r, G=$g, B=$b "; //tulis pixel

$gray = imagecolorallocate($im2, $dtmhb[$x][$y]->gray, $dtmhb[$x][$y]->gray, $dtmhb[$x] [$y]->gray);

$merah = imagecolorallocate($imred, $dtmhb[$x][$y]->R, 0, 0); $hijau = imagecolorallocate($imgreen, 0, $dtmhb[$x][$y]->G, 0); $biru = imagecolorallocate($imblue, 0, 0, $dtmhb[$x][$y]->B); // set $from to $to if hex matches.

imagesetpixel($imred, $x, $y, $merah); imagesetpixel($imgreen, $x, $y, $hijau); imagesetpixel($imblue, $x, $y, $biru); //imagesetpixel($imgray, $x, $y, $gray); }

} ?>

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2. Gambar RGB (BIRU)

<?php

error_reporting(0);

//============ PENGOLAHAN CITRA 24 BIT =========

/*

*/

$dewi="asli.jpg";

$hasil = getimagesize($dewi);

if(! $hasil)

{

die("File $citra tidak dapat dibuka");

}

else

{

//tampilkan informasi data citra

//print("<IMG SRC=\"$dewi\">");

//print("");

//print("Lebar Citra = $hasil[0] \n");

//print("Tinggi Citra = $hasil[1] \n");

//print("Tipe Citra = $hasil[2] \n");

//print("String Citra = $hasil[3] \n");

}

$gb=imagecreatefromJPEG($dewi);

//==== Baca Citra Ukuran Tinggi Lebar ===

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//Tampilkan tinggi lebar citra

echo "Image width " .$lebar;

echo " ";

echo "Image height " .$tinggi;

echo " ";

echo "Image type " .$type;

echo " ";

echo "Attribute " .$attr;

//fungsi membaca citra *.PNG

$im = imagecreatefrompng("asli.jpg");

$mhb = imagecolorat($im, 10, 15);

$m = ($mhb >> 16) & 0xFF;

$h = ($mhb >> 8) & 0xFF;

$b = $mhb & 0xFF;

var_dump($m, $h, $b);

//syntax membaca citra *.JPG

$im = imagecreatefromjpeg($dewi);

$m = ($mhb >> 16) & 0xFF;

$h = ($mhb >> 8) & 0xFF;

$b = $mhb & 0xFF;

//var_dump($r, $g, $b);

//=== Variabel Buatan/Struc/Structure ====

class dataMHB

{

public $M; //untuk red

public $H; //untuk green

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public $gray; //untuk gray

public $teks; //misalnya

}

//=======================================

//contoh mengakses variabel biasa berbasis struct

$data = new dataMHB();

$data->M =30;

$data->H =15;

$data->B =244;

$data->gray =40;

//CONTOH mengakses variabel Array D1 berbasis struct

$dt[] = new dataMHB();

$dt[1]->M =30;

$dt[1]->H =15;

$dt[1]->B =244;

echo $dt[1]->gray =40;

$DATA[][] = new dataMHB();

$DATA[1][3]->M =30;

$DATA[1][3]->H =15;

$DATA[1][3]->B =244;

$DATA[1][3]->gray =40;

// ==== BACA RGB Citra =====

$imred = imagecreatefromjpeg($dewi);

$imgreen = imagecreatefromjpeg($dewi);

$imblue = imagecreatefromjpeg($dewi);

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$x=0;

$dtMHB[][] = new dataMHB();

for($x==0;$x<$lebar-1;$x++)

{

$y=0;

for($y==0;$y<$tinggi-1;$y++)

{

//echo "y=". $y . ", x=" . $x . "";

//Ambil Data Citra

//Get RGB disimpan dalam variabel biasa (JADUL)

//$r = (int)(($rgb >> 16) & 0xFF); //mode JADUL

$red[$x][$y] = (int)(($mhb >> 13) & 0xFF);

$green[$x][$y] = (int)(($mhb >> 8) & 0xFF);

$blue[$x][$y] = (int)($mhb & 0xFF);

$gray[$x][$y]= (int)(($m+$h+$b)/3);

//Simpan data RGB to Array berbasis Structure

$dtMHB[$x][$y]->M= (int)(($mhb >> 13) & 0xFF);

$dtMHB[$x][$y]->H= (int)(($mhb >> 8) & 0xFF);

$dtMHB[$x][$y]->B= (int)($mhb & 0xFF);

$dtMHB[$x][$y]->gray= (int)(($m+$h+$b)/3);

//tampilkan data RGB

//echo "Matrik [$x,$y] R=$r, G=$g, B=$b ";

//tulis pixel

$gray = imagecolorallocate($im2, $dtMHB[$x][$y]->gray, $dtMHB[$x][$y]->gray, $dtMHB[$x][$y]->gray);

$merah = imagecolorallocate($imred, $dtMHB[$x][$y]->M, 0, 0);

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$biru1 = imagecolorallocate($imblue1, 0, 0, $dtMHB[$x][$y]->B);

$biru = imagecolorallocate($imblue, 60, 80, $dtMHB[$x][$y]->B);

// set $from to $to if hex matches.

imagesetpixel($imred, $x, $y, $merah);

imagesetpixel($imgreen, $x, $y, $hijau);

imagesetpixel($imblue, $x, $y, $biru);

imagesetpixel($imblue1, $x, $y, $biru1);

//imagesetpixel($imgray, $x, $y, $gray);

}

echo" ";

imagepng($imblue1, "gambar.jpg");

imagedestroy($imblue1);

echo "Sebelum Proses Brightness";

$dewi="gambar.jpg";

print("");

print("<IMG SRC=\"$dewi\">");

print("");

//Simpan Citra Gray

imagepng($imblue, "biru.jpg");

imagedestroy($imblue);

$dewi="biru.jpg";

print("");

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?>

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3. SKRIP RGB HIJAU

<?php

error_reporting(0);

/*

*/

$dewi="asli.jpg";

if(! $hasil)

{

}

else

{

//print("");

}

(14)

echo " ";

$m = ($mhb >> 16) & 0xFF;

$h = ($mhb >> 8) & 0xFF;

$b = $mhb & 0xFF;

$m = ($mhb >> 16) & 0xFF;

$h = ($mhb >> 8) & 0xFF;

$b = $mhb & 0xFF;

class dataMHB

{

(15)

public $B; //untuk blue

}

//=======================================

$data->M =30;

$data->H =15;

$data->B =244;

$data->gray =40;

$dt[1]->M =30;

$dt[1]->H =15;

$dt[1]->B =244;

$DATA[1][3]->M =30;

$DATA[1][3]->H =15;

$DATA[1][3]->B =244;

$DATA[1][3]->gray =40;

//$imred = imagecreatefromjpeg($dewi);

(16)

//$imblue = imagecreatefromjpeg($dewi);

$imgreen1 = imagecreatefromjpeg($dewi);

$x=0;

{

$y=0;

{

//echo "y=". $y . ", x=" . $x . "";

//Ambil Data Citra

$red[$x][$y] = (int)(($mhb >> 13) & 0xFF);

$gray[$x][$y]= (int)(($m+$h+$b)/3);

//tulis pixel

(17)

// $merah = imagecolorallocate($imred, $dtMHB[$x][$y]->M, 0, 0);

$hijau = imagecolorallocate($imgreen, 0, $dtMHB[$x][$y]->H, 0);

$hijau1 = imagecolorallocate($imgreen, 80, $dtMHB[$x][$y]->H, 80);

//$blue1 = imagecolorallocate($imblue1, 0, 0, $dtMHB[$x][$y]->B);

//$biru = imagecolorallocate($imblue, 60, 80, $dtMHB[$x][$y]->B);

//imagesetpixel($imred, $x, $y, $merah);

//imagesetpixel($imblue, $x, $y, $biru);

imagesetpixel($imgreen1, $x, $y, $hijau1);

}

echo" ";

imagepng($imgreen1, "gambar.jpg");

imagedestroy($imgreen1);

$dewi="gambar.jpg";

print("");

(18)

//tulis pixel

$gray = imagecolorallocate($im2, $dtMHB[$x][$y]->gray, $dtMHB[$x][$y]->gray, $dtMHB[$x][$y]->gray);

$hijau = imagecolorallocate($imgreen, 0, $dtMHB[$x][$y]->H, 0);

$hijau1 = imagecolorallocate($imgreen1, 0, $dtMHB[$x][$y]->H, 0);

$biru1 = imagecolorallocate($imblue1, 0, 0, $dtMHB[$x][$y]->B);

$biru = imagecolorallocate($imblue, 60, 80, $dtMHB[$x][$y]->B);

imagesetpixel($imblue, $x, $y, $biru);

imagesetpixel($imgreen1, $x, $y, $hijau1);

}

echo" ";

imagepng($imgreen1, "gambar.jpg");

imagedestroy($imgreen1);

$dewi="gambar.jpg";

print("");

//Simpan Citra Gray

imagepng($imgreen, "hijau.jpg");

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$dewi="hijau.jpg";

print("");

echo "Hasil Proses Brightness";

?>

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4. Skrip RGB (merah)

<?php

error_reporting(0);

/*

*/

$dewi="asli.jpg";

if(! $hasil)

{

}

else

{

//print("");

}

(21)

echo " ";

$m = ($mhb >> 16) & 0xFF;

$h = ($mhb >> 8) & 0xFF;

$b = $mhb & 0xFF;

$m = ($mhb >> 16) & 0xFF;

$h = ($mhb >> 8) & 0xFF;

$b = $mhb & 0xFF;

class dataMHB

{

(22)

}

//========================================

$data->M =30;

$data->H =15;

$data->B =244;

$data->gray =40;

$dt[1]->M =30;

$dt[1]->H=15;

$dt[1]->B =244;

$DATA[1][3]->M =30;

$DATA[1][3]->H =15;

$DATA[1][3]->B =244;

$DATA[1][3]->gray =40;

$imred1 = imagecreatefromjpeg($dewi);

//$imgreen = imagecreatefromjpeg($dewi);

(23)

$imgray = imagecreatefromjpeg($dewi);

$x=0;

{

$y=0;

{

//echo "y=". $y . ", x=" . $x . "";

//Ambil Data Citra

$red[$x][$y] = (int)(($mhb >> 13) & 0xFF);

//$gray[$x][$y]= (int)(($m+$h+$b)/3);

$gray[$x][$y]= (int)(($m+$h+$b)/3);

//$dtMHB[$x][$y]->gray=(int)(($dtMHB[$x][$y]->M+$dtMHB[$x][$y]->H+$dtMHB[$x][$y]->B)/3);

//$dtMHB[$x][$y]->gray= $dtMHB[$x][$y]->gray+100;

//if($dtMHB[$x][$y]->gray > 255)

//{

(24)

//}

//if($dtMHB[$x][$y]->gray < 0)

//{

//$dtMHB[$x][$y]->gray=0;

//}

//tulis pixel

$gray = imagecolorallocate($imgray, $dtMHB[$x][$y]->M,$dtMHB[$x][$y]->gray, $dtMHB[$x][$y]->gray);

$merah1 = imagecolorallocate($imred1, $dtMHB[$x][$y]->M, 0, 0);

//$hijau = imagecolorallocate($imgreen, 0, $dtMHB[$x][$y]->H, 0);

imagesetpixel($imred1, $x, $y, $merah1);

// imagesetpixel($imgreen, $x, $y, $hijau);

//imagesetpixel($im2, $x, $y, $gray);

imagesetpixel($imgray, $x, $y, $gray);

}

echo" ";

imagepng($imred1, "merah1.jpg");

imagedestroy($imred1);

(25)

print("");

//Simpan Citra Gray

imagepng($imred, "merah.jpg");

imagedestroy($imred);

$dewi="merah.jpg";

print("");

//Simpan Citra Gray

// imagepng($imgray, "gray.jpg");

// imagedestroy($imgray);

//$dewi="gray.jpg";

//print("");

print("");

?>

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(27)

SKRIP GRAY

<?php

error_reporting(0);

/*

*/

$dewi="asli.jpg";

if(! $hasil)

{

}

else

{

//print("");

}

(28)

echo " ";

$m = ($mhb >> 16) & 0xFF;

$h = ($mhb >> 8) & 0xFF;

$b = $mhb & 0xFF;

$m = ($mhb >> 16) & 0xFF;

$h = ($mhb >> 8) & 0xFF;

$b = $mhb & 0xFF;

class dataMHB

{

(29)

}

//========================================

$data->M =30;

$data->H =15;

$data->B =244;

$data->gray =40;

$dt[1]->M =30;

$dt[1]->H=15;

$dt[1]->B =244;

$DATA[1][3]->M =30;

$DATA[1][3]->H =15;

$DATA[1][3]->B =244;

$DATA[1][3]->gray =40;

(30)

$x=0;

{

$y=0;

{

//echo "y=". $y . ", x=" . $x . "";

//Ambil Data Citra

$red[$x][$y] = (int)(($mhb >> 13) & 0xFF);

//$gray[$x][$y]= (int)(($m+$h+$b)/3);

$dtMHB[$x][$y]->gray=(int)(($dtMHB[$x][$y]->M+$dtMHB[$x][$y]->H+ $dtMHB[$x][$y]->B)/3);

$dtMHB[$x][$y]->gray= $dtMHB[$x][$y]->gray+100;

if($dtMHB[$x][$y]->gray > 255)

{

(31)

}

if($dtMHB[$x][$y]->gray < 0)

{

$dtMHB[$x][$y]->gray=0;

}

//tulis pixel

imagesetpixel($im2, $x, $y, $gray);

}

echo" ";

imagepng($imgray, "gray.jpg");

imagedestroy($imgray);

(32)

print("");

//Simpan Citra Gray

$dewi="merah.jpg";

print("");

//Simpan Citra Gray

//$dewi="gray.jpg";

//print("");

print("");

?>

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6. SKRIP CONTRAS

<?php

error_reporting(0);

/*

(34)

$dewi="asli.jpg";

if(! $hasil)

{

}

else

{

//print("");

}

echo " ";

(35)

$m = ($mhb >> 16) & 0xFF;

$h = ($mhb >> 8) & 0xFF;

$b = $mhb & 0xFF;

$m = ($mhb >> 16) & 0xFF;

$h = ($mhb >> 8) & 0xFF;

$b = $mhb & 0xFF;

class dataMHB

{

}

//========================================

$data->M =30;

$data->H =15;

(36)

$data->gray =40;

$dt[1]->M =30;

$dt[1]->H=15;

$dt[1]->B =244;

$DATA[1][3]->M =30;

$DATA[1][3]->H =15;

$DATA[1][3]->B =244;

$DATA[1][3]->gray =40;

$imgray = imagecreatefromjpeg($dewi);

$x=0;

{

$y=0;

(37)

//echo "y=". $y . ", x=" . $x . "";

//Ambil Data Citra

$red[$x][$y] = (int)(($mhb >> 13) & 0xFF);

//$gray[$x][$y]= (int)(($m+$h+$b)/3);

$gray[$x][$y]= (int)((2*40-50)+50);

//$dtMHB[$x][$y]->gray=(int)(($dtMHB[$x][$y]->M+$dtMHB[$x][$y]->H+$dtMHB[$x][$y]->B)/3);

//$dtMHB[$x][$y]->gray= $dtMHB[$x][$y]->gray+100;

if($dtMHB[$x][$y]->gray > 255)

{

}

if($dtMHB[$x][$y]->gray < 0)

{

}

(38)

imagesetpixel($im2, $x, $y, $gray);

}

echo" ";

imagepng($imgray, "gray.jpg");

imagedestroy($imgray);

$dewi="gray.jpg";

print("");

//Simpan Citra Gray

$dewi="merah.jpg";

(39)

print("");

//Simpan Citra Gray

//$dewi="gray.jpg";

//print("");

print("");

?>

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7.

SKRIP INDEX

<html>

<head>

<title>Dewi Yuliana Setyowati</title>

</head>

<marquee>SELAMAT DATANG

<div align="center">PENCITRAAN DIGITAL </div>

<hr>

Judul Tugas :

Citra_brightness_structure

Silahkan klik menu dibawah ini untuk membandingkan hasil dari proses Brightness

<div align="left">Ini gambar asli</div>

<hr>

<body>

<?php

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?>

Copyright@Dewi Yuliana .S(111080200200)

</body>

</html>

HASIL GAMBAR INDEX

PENGERTIAN SKRIP2 PHP

1. Fungsi GetImageSize() disini menghasilkan array pertama yaitu lebar dari file gambar yang

akan diupload dan array kedua adalah tinggi dari gambar yang akan diupload.

2. Imagecreatefromjpeg membuat gambar yang berasal dari sebuah URL ataupun nama sebuah

file

3. Getimagesize yang akan menghasilkan array informasi dari file gambar yang akan kita resize

(yang diset melalui constructor)

4. Imagecreatefromjpeg load gambar dari sumber yang disediakan

5. Imagecolorallocatefungsi untuk menyimpan warna