Java Image Processing: Why is the output image smaller in storage than the input image?
I'm learning Java Image Processing. Here is my code:
import java.awt.image.BufferedImage;
import javax.imageio.ImageIO;
public class LoadImage {
public static void main(String args) {
int width = 1280;
int height = 720;
BufferedImage image = null;
// READ IMAGE
try {
File input_image = new File("E:\SELF-TAUGHT LEARNING\39. Image Processing with Java\test-image.jpg");
image = new BufferedImage (width,height,BufferedImage.TYPE_INT_ARGB);
image = ImageIO.read(input_image);
System.out.println("Read successfully");
}
catch (IOException e) {
System.out.println("Error: " + e);
}
// WRITE IMAGE
try {
File output_image = new File("E:\SELF-TAUGHT LEARNING\39. Image Processing with Java\test-image-output.jpg");
ImageIO.write(image, "jpg", output_image);
System.out.println("Writing successfully");
}
catch (IOException e) {
System.out.println("Error: "+ e);
}
}
}
So the input image is around 300kb. But the output image is only 48kb. Why? Thank you
java image
edited Nov 21 '18 at 17:31
Kevin Workman
33.4k53969
asked Nov 21 '18 at 16:01
Duc Le Tran
1
add a comment |
I'm learning Java Image Processing. Here is my code:
import java.awt.image.BufferedImage;
import javax.imageio.ImageIO;
public class LoadImage {
public static void main(String args) {
int width = 1280;
int height = 720;
BufferedImage image = null;
// READ IMAGE
try {
File input_image = new File("E:\SELF-TAUGHT LEARNING\39. Image Processing with Java\test-image.jpg");
image = new BufferedImage (width,height,BufferedImage.TYPE_INT_ARGB);
image = ImageIO.read(input_image);
System.out.println("Read successfully");
}
catch (IOException e) {
System.out.println("Error: " + e);
}
// WRITE IMAGE
try {
File output_image = new File("E:\SELF-TAUGHT LEARNING\39. Image Processing with Java\test-image-output.jpg");
ImageIO.write(image, "jpg", output_image);
System.out.println("Writing successfully");
}
catch (IOException e) {
System.out.println("Error: "+ e);
}
}
}
So the input image is around 300kb. But the output image is only 48kb. Why? Thank you
java image
edited Nov 21 '18 at 17:31
Kevin Workman
33.4k53969
asked Nov 21 '18 at 16:01
Duc Le Tran
1
4
WHY THE SHOUTING IN THE TITLE?
– EJoshuaS
Nov 21 '18 at 16:03
1
Did you check whether the written image uses the same level of JPEG compression as the original image?
– VGR
Nov 21 '18 at 17:05
add a comment |
I'm learning Java Image Processing. Here is my code:
import java.awt.image.BufferedImage;
import javax.imageio.ImageIO;
public class LoadImage {
public static void main(String args) {
int width = 1280;
int height = 720;
BufferedImage image = null;
// READ IMAGE
try {
File input_image = new File("E:\SELF-TAUGHT LEARNING\39. Image Processing with Java\test-image.jpg");
image = new BufferedImage (width,height,BufferedImage.TYPE_INT_ARGB);
image = ImageIO.read(input_image);
System.out.println("Read successfully");
}
catch (IOException e) {
System.out.println("Error: " + e);
}
// WRITE IMAGE
try {
File output_image = new File("E:\SELF-TAUGHT LEARNING\39. Image Processing with Java\test-image-output.jpg");
ImageIO.write(image, "jpg", output_image);
System.out.println("Writing successfully");
}
catch (IOException e) {
System.out.println("Error: "+ e);
}
}
}
So the input image is around 300kb. But the output image is only 48kb. Why? Thank you
java image
edited Nov 21 '18 at 17:31
Kevin Workman
33.4k53969
asked Nov 21 '18 at 16:01
Duc Le Tran
1
I'm learning Java Image Processing. Here is my code:
import java.awt.image.BufferedImage;
import javax.imageio.ImageIO;
public class LoadImage {
public static void main(String args) {
int width = 1280;
int height = 720;
BufferedImage image = null;
// READ IMAGE
try {
File input_image = new File("E:\SELF-TAUGHT LEARNING\39. Image Processing with Java\test-image.jpg");
image = new BufferedImage (width,height,BufferedImage.TYPE_INT_ARGB);
image = ImageIO.read(input_image);
System.out.println("Read successfully");
}
catch (IOException e) {
System.out.println("Error: " + e);
}
// WRITE IMAGE
try {
File output_image = new File("E:\SELF-TAUGHT LEARNING\39. Image Processing with Java\test-image-output.jpg");
ImageIO.write(image, "jpg", output_image);
System.out.println("Writing successfully");
}
catch (IOException e) {
System.out.println("Error: "+ e);
}
}
}
So the input image is around 300kb. But the output image is only 48kb. Why? Thank you
java image
java image
edited Nov 21 '18 at 17:31
Kevin Workman
33.4k53969
asked Nov 21 '18 at 16:01
Duc Le Tran
1
edited Nov 21 '18 at 17:31
Kevin Workman
33.4k53969
asked Nov 21 '18 at 16:01
Duc Le Tran
1
edited Nov 21 '18 at 17:31
Kevin Workman
33.4k53969
edited Nov 21 '18 at 17:31
Kevin Workman
33.4k53969
edited Nov 21 '18 at 17:31
Kevin Workman
33.4k53969
33.4k53969
asked Nov 21 '18 at 16:01
Duc Le Tran
1
asked Nov 21 '18 at 16:01
Duc Le Tran
1
asked Nov 21 '18 at 16:01
Duc Le Tran
1
1
4
WHY THE SHOUTING IN THE TITLE?
– EJoshuaS
Nov 21 '18 at 16:03
1
Did you check whether the written image uses the same level of JPEG compression as the original image?
– VGR
Nov 21 '18 at 17:05
add a comment |
4
WHY THE SHOUTING IN THE TITLE?
– EJoshuaS
Nov 21 '18 at 16:03
1
Did you check whether the written image uses the same level of JPEG compression as the original image?
– VGR
Nov 21 '18 at 17:05
4
4
WHY THE SHOUTING IN THE TITLE?
– EJoshuaS
Nov 21 '18 at 16:03
WHY THE SHOUTING IN THE TITLE?
– EJoshuaS
Nov 21 '18 at 16:03
1
1
Did you check whether the written image uses the same level of JPEG compression as the original image?
– VGR
Nov 21 '18 at 17:05
Did you check whether the written image uses the same level of JPEG compression as the original image?
– VGR
Nov 21 '18 at 17:05
add a comment |
1 Answer
1
active
oldest
votes
If the image is the same resolution and quality after saving the new version, it's likely just a difference of metadata and formatting. It's also possible, however, that you are getting a lower quality image - if the original image had a high enough quality setting, it may not be noticeable when Java saves it at a lower quality.
Some things to check:
- do the before and after images look different?
- is the after image smaller in size?
I'm not very knowledgeable about Java, and don't know a lot about their image processing, but I would imagine there are methods for setting image size, resolution, and quality. I do, however, work with images a lot, and I know there are a lot of optimizations (especially in JPEG images) that you can do to reduce file size without affecting visual quality noticeably.
answered Nov 21 '18 at 16:07
brandonmack
215
add a comment |
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1 Answer
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1 Answer
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active
oldest
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oldest
votes
active
oldest
votes
If the image is the same resolution and quality after saving the new version, it's likely just a difference of metadata and formatting. It's also possible, however, that you are getting a lower quality image - if the original image had a high enough quality setting, it may not be noticeable when Java saves it at a lower quality.
Some things to check:
- do the before and after images look different?
- is the after image smaller in size?
I'm not very knowledgeable about Java, and don't know a lot about their image processing, but I would imagine there are methods for setting image size, resolution, and quality. I do, however, work with images a lot, and I know there are a lot of optimizations (especially in JPEG images) that you can do to reduce file size without affecting visual quality noticeably.
answered Nov 21 '18 at 16:07
brandonmack
215
add a comment |
If the image is the same resolution and quality after saving the new version, it's likely just a difference of metadata and formatting. It's also possible, however, that you are getting a lower quality image - if the original image had a high enough quality setting, it may not be noticeable when Java saves it at a lower quality.
Some things to check:
- do the before and after images look different?
- is the after image smaller in size?
I'm not very knowledgeable about Java, and don't know a lot about their image processing, but I would imagine there are methods for setting image size, resolution, and quality. I do, however, work with images a lot, and I know there are a lot of optimizations (especially in JPEG images) that you can do to reduce file size without affecting visual quality noticeably.
answered Nov 21 '18 at 16:07
brandonmack
215
add a comment |
If the image is the same resolution and quality after saving the new version, it's likely just a difference of metadata and formatting. It's also possible, however, that you are getting a lower quality image - if the original image had a high enough quality setting, it may not be noticeable when Java saves it at a lower quality.
Some things to check:
- do the before and after images look different?
- is the after image smaller in size?
I'm not very knowledgeable about Java, and don't know a lot about their image processing, but I would imagine there are methods for setting image size, resolution, and quality. I do, however, work with images a lot, and I know there are a lot of optimizations (especially in JPEG images) that you can do to reduce file size without affecting visual quality noticeably.
answered Nov 21 '18 at 16:07
brandonmack
215
If the image is the same resolution and quality after saving the new version, it's likely just a difference of metadata and formatting. It's also possible, however, that you are getting a lower quality image - if the original image had a high enough quality setting, it may not be noticeable when Java saves it at a lower quality.
Some things to check:
- do the before and after images look different?
- is the after image smaller in size?
I'm not very knowledgeable about Java, and don't know a lot about their image processing, but I would imagine there are methods for setting image size, resolution, and quality. I do, however, work with images a lot, and I know there are a lot of optimizations (especially in JPEG images) that you can do to reduce file size without affecting visual quality noticeably.
answered Nov 21 '18 at 16:07
brandonmack
215
answered Nov 21 '18 at 16:07
brandonmack
215
answered Nov 21 '18 at 16:07
brandonmack
215
answered Nov 21 '18 at 16:07
brandonmack
215
215
add a comment |
add a comment |
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4
WHY THE SHOUTING IN THE TITLE?
– EJoshuaS
Nov 21 '18 at 16:03
1
Did you check whether the written image uses the same level of JPEG compression as the original image?
– VGR
Nov 21 '18 at 17:05