14 the infrared image gray level-CodePudding

Need to calibration of infrared thermal imager, the infrared image gray - temperature fitting method, but is the matlab was used to extract the 8-bit grayscale values, not precise enough, ask a great god knows how to extract the image 14 gray-level signals, software algorithm and so on?

CodePudding user response:

Are you sure you original format has 14 gray (42) color?

CodePudding user response:

reference 1st floor DelphiGuy response:

are you sure the original format has 14 gray (42) color?

you mean 24 depth image can only extract 8-bit grayscale values?

CodePudding user response:

Yes, so-called gray (or luminance) figure is per pixel R=G=B

CodePudding user response:

Grey value as RGB color (Gray, Gray, Gray), three components are the same,

Baidu to below:
-- -- -- -- -- -- -- -- -- --
Formula of grey value
The 2009-11-19 13:40:30 | classification: work study report | | size subscription

Download the LOFTER my photo book |
Often met in engineering application need to color image to gray image transformation, image acquisition card come over for the color image, in order to speed up the processing speed, the color image is converted to black and white images, this problem is better solved, in general, three bytes, each pixel color image corresponding to each byte R, G, B component of brightness (red, green, blue), the transformed black-and-white images of a pixel with a bytes that point grey value, its value between 0 ~ 255, the greater the value, which is white, the brighter the already, the smaller is the more black, conversion formula is:

Gray (I, j)=0.11 + 0.59 * * R (I, j) G (I, j) + 0.3 * B (I, j)

The Gray (I, j) for the transformed in black and white image (I, j) point grey value.

CodePudding user response:

The

reference 4 floor u010165006 reply:

grey value as RGB color (Gray, Gray, Gray), the same three components,

Baidu to below:
-- -- -- -- -- -- -- -- -- --
Formula of grey value
The 2009-11-19 13:40:30 | classification: work study report | | size subscription

Download the LOFTER my photo book |
Often met in engineering application need to color image to gray image transformation, image acquisition card come over for the color image, in order to speed up the processing speed, the color image is converted to black and white images, this problem is better solved, in general, three bytes, each pixel color image corresponding to each byte R, G, B component of brightness (red, green, blue), the transformed black-and-white images of a pixel with a bytes that point grey value, its value between 0 ~ 255, the greater the value, which is white, the brighter the already, the smaller is the more black, conversion formula is:

Gray (I, j)=0.11 + 0.59 * * R (I, j) G (I, j) + 0.3 * B (I, j)

The Gray (I, j) for the transformed in black and white image (I, j) point grey value.

Only between 0 and 255 grayscale, how can I get more more series of gray

CodePudding user response:

Seems to have a 64 - bit images,

CodePudding user response:

The

reference 4 floor u010165006 reply:

grey value as RGB color (Gray, Gray, Gray), the same three components,

Baidu to below:
-- -- -- -- -- -- -- -- -- --
Formula of grey value
The 2009-11-19 13:40:30 | classification: work study report | | size subscription

Download the LOFTER my photo book |
Often met in engineering application need to color image to gray image transformation, image acquisition card come over for the color image, in order to speed up the processing speed, the color image is converted to black and white images, this problem is better solved, in general, three bytes, each pixel color image corresponding to each byte R, G, B component of brightness (red, green, blue), the transformed black-and-white images of a pixel with a bytes that point grey value, its value between 0 ~ 255, the greater the value, which is white, the brighter the already, the smaller is the more black, conversion formula is:

Gray (I, j)=0.11 + 0.59 * * R (I, j) G (I, j) + 0.3 * B (I, j)

The Gray (I, j) for the transformed in black and white image (I, j) point grey value.

In fact is a weighted average ~ ~ ~

CodePudding user response:

refer to 6th floor u010165006 response:

seems to have a 64 - bit images,

Often used in astronomy, TIFF format support 16-bit gray, but was unable to complete the whole show grayscale range, the display and graphics output is short of, each component of the 10 or 12 already very much,

CodePudding user response:

refer to 7th floor hongss response:

Quote: refer to 4th floor u010165006 response:

Grey value as RGB color (Gray, Gray, Gray), three components are the same,

Baidu to below:
-- -- -- -- -- -- -- -- -- --
Formula of grey value
The 2009-11-19 13:40:30 | classification: work study report | | size subscription

Download the LOFTER my photo book |
Often met in engineering application need to color image to gray image transformation, image acquisition card come over for the color image, in order to speed up the processing speed, the color image is converted to black and white images, this problem is better solved, in general, three bytes, each pixel color image corresponding to each byte R, G, B component of brightness (red, green, blue), the transformed black-and-white images of a pixel with a bytes that point grey value, its value between 0 ~ 255, the greater the value, which is white, the brighter the already, the smaller is the more black, conversion formula is:

Gray (I, j)=0.11 + 0.59 * * R (I, j) G (I, j) + 0.3 * B (I, j)

The Gray (I, j) for the transformed in black and white image (I, j) point grey value.

In fact is a weighted average ~ ~ ~

So to speak

CodePudding user response:

refer to the eighth floor DelphiGuy response:

Quote: refer to the sixth floor u010165006 response:

Seems to have a 64 - bit images,

Often used in astronomy, TIFF format support 16-bit gray, but was unable to complete the whole show grayscale range, the display and graphics output is short of, each component of the 10 or 12 already very much,

There should be a professional display?

CodePudding user response:

Can display 10 is a professional display of gray, as far as I know no can display 16 grayscale display, dynamic adjustment range is generally through the software, each part can only display gray-scale,

CodePudding user response:

11 references DelphiGuy response:

can display 10 is a professional display of gray, as far as I know has not been able to display 16 grayscale display, dynamic adjustment range is generally through the software, each part can only display gray-scale,

Display 10 gray, mean 30 dark color? Show only the black and white and not very useful,

CodePudding user response:

Is now part of the video card supports RGB output per weight 10 color depth, also need to monitor support,