TruePic
Encyclopedia
TruePic is the name Olympus has given its image processing engine
. The second version was named TruePic TURBO. In 2007 Olympus began to equip its digital camera
s, both compact and D-SLRs
with the latest version, TruePic III.
TruePic III
With this engine, its ability to reproduce colours naturally was improved. For this, the Advanced Proper Gamma
III technology was enhanced to independently control luminance
and chrominance
difference signals for more faithful reproduction of pale colours. Also, individual colours can be corrected without affecting the reproduction of other colours. Colour reproduction was fine-tuned so that they are not just correct but also appear pleasing to the human eye. As a result, human skin colours and the blue of the sky can be reproduced more faithfully.
The Advanced Noise Filter III contributes to a high-quality reproduction of images through the reduction of noise
by isolating the image and noise signals more accurately. It replaces the real space (real image) with a frequency space and extracts the signal component. It then smooths out the signal components while preserving the edges.
To reproduce edges smoothly but still sharply, the Advanced Detail Reproduction technology detects edge direction and applies a Low Pass Filter
(LPF) in the edge direction and a High Pass Filter
(HPF) in the edges normal line direction. This way edges become smooth and false colours are eliminated.
The new engine also provides a speed improvement so 3fps image sequences are possible even with a 10 megapixel resolution.
TruePic III+
This engine is an improvement of the previous engine use in E450 dslr, E620 and E30 (if not wrong, but use in e450 is confirmed)
TruePic V
The TruePic V engine is used in the Olympus Pen E-P1, E-P2, and E-PL1. Advantages include faster processing time and nicer colour.
TruePic V+
The TruePic V+ engine is used in the Olympus E-5.
Image processing engine
The image processing engine, or image processor, is an important component of a digital camera. The digital image processing engine can perform a range of tasks.- Bayer transformation :...
. The second version was named TruePic TURBO. In 2007 Olympus began to equip its digital camera
Digital camera
A digital camera is a camera that takes video or still photographs, or both, digitally by recording images via an electronic image sensor. It is the main device used in the field of digital photography...
s, both compact and D-SLRs
Digital single-lens reflex camera
Most digital single-lens reflex cameras are digital cameras that use a mechanical mirror system and pentaprism to direct light from the lens to an optical viewfinder on the back of the camera....
with the latest version, TruePic III.
TruePic III
With this engine, its ability to reproduce colours naturally was improved. For this, the Advanced Proper Gamma
Gamma correction
Gamma correction, gamma nonlinearity, gamma encoding, or often simply gamma, is the name of a nonlinear operation used to code and decode luminance or tristimulus values in video or still image systems...
III technology was enhanced to independently control luminance
Luminance
Luminance is a photometric measure of the luminous intensity per unit area of light travelling in a given direction. It describes the amount of light that passes through or is emitted from a particular area, and falls within a given solid angle. The SI unit for luminance is candela per square...
and chrominance
Chrominance
Chrominance is the signal used in video systems to convey the color information of the picture, separately from the accompanying luma signal . Chrominance is usually represented as two color-difference components: U = B' − Y' and V = R' − Y'...
difference signals for more faithful reproduction of pale colours. Also, individual colours can be corrected without affecting the reproduction of other colours. Colour reproduction was fine-tuned so that they are not just correct but also appear pleasing to the human eye. As a result, human skin colours and the blue of the sky can be reproduced more faithfully.
The Advanced Noise Filter III contributes to a high-quality reproduction of images through the reduction of noise
Image noise
Image noise is random variation of brightness or color information in images, and is usually an aspect of electronic noise. It can be produced by the sensor and circuitry of a scanner or digital camera...
by isolating the image and noise signals more accurately. It replaces the real space (real image) with a frequency space and extracts the signal component. It then smooths out the signal components while preserving the edges.
To reproduce edges smoothly but still sharply, the Advanced Detail Reproduction technology detects edge direction and applies a Low Pass Filter
Low-pass filter
A low-pass filter is an electronic filter that passes low-frequency signals but attenuates signals with frequencies higher than the cutoff frequency. The actual amount of attenuation for each frequency varies from filter to filter. It is sometimes called a high-cut filter, or treble cut filter...
(LPF) in the edge direction and a High Pass Filter
High-pass filter
A high-pass filter is a device that passes high frequencies and attenuates frequencies lower than its cutoff frequency. A high-pass filter is usually modeled as a linear time-invariant system...
(HPF) in the edges normal line direction. This way edges become smooth and false colours are eliminated.
The new engine also provides a speed improvement so 3fps image sequences are possible even with a 10 megapixel resolution.
TruePic III+
This engine is an improvement of the previous engine use in E450 dslr, E620 and E30 (if not wrong, but use in e450 is confirmed)
TruePic V
The TruePic V engine is used in the Olympus Pen E-P1, E-P2, and E-PL1. Advantages include faster processing time and nicer colour.
TruePic V+
The TruePic V+ engine is used in the Olympus E-5.