Pixel Analyzer
Brief Description
Analyze pixels in the image and computes statistics such as the minimum, maximum and mean intensities over the whole image or a user-defined region. Statistics are computed per image channel as keyframes on parameters in the RGBA, HSVL and Luminance sub-groups. This is useful to further edit the keyframes or link the parameters to other parameters.
When "Auto Analyze" is checked, the statistics are computed automatically during playback or when scrubbing the timeline. In this mode, if "Override Keyframes" is checked, Autograph will always recompute keyframes. Instead, if unchecked, only missing keyframes will be computed.
When "Auto Analyze" is unchecked, Analysis has to be manually launched by clicking on the "Analyze Frame" or "Analyze Layer Range" buttons.
The Analysis Region can be manually edited by selecting the line and editing the rectangle in the viewport
Controls
| Parameter / Script Name | Type | Default | Function |
|---|---|---|---|
Enabled / enabled | Boolean | On | |
Analysis Region Mode / roiMode | Choice | Whole Image | The region used to track the pixels. Selecting Analaysis Region and defining a smaller rectangle may improve performances - Analysis Region - Whole Image |
Analysis Region / analysisRegion | -500, -500, 500, 500 | ||
Enable RGBA Stats / enableRGB | Boolean | On | When checked RGBA statistics will be computed when analysing |
RGBA / rgbaStats | Category | - | |
RGBA Min / rgbaMin | Color | 0, 0, 0, 0 | Minimum value |
RGBA Max / rgbaMax | Color | 0, 0, 0, 0 | Maximum value |
RGBA Mean / rgbaMean | Color | 0, 0, 0, 0 | Mean value |
Enable RGBA Advanced Stats / rgbaEnableExtra | Boolean | Off | When checked, the Standard Deviation, Kurtosis and Skewness are also analysed |
RGBA S.dev. / rgbaSdev | Color | 0, 0, 0, 0 | Standard deviation: quantifies the variability of the data |
RGBA Kurtosis / rgbaKurtosis | Color | 0, 0, 0, 0 | Whether the shape of the data distribution matches the Gaussian distribution: a value of 0 means it is a gaussian distribution. A flat distribution has a negative value, whereas a peaked distribution has a positive kurtosis |
RGBA Skewness / rgbaSkewness | Color | 0, 0, 0, 0 | How symmetrical the distribution is: A value of 0 indicates a symmetrical distribution, an asymmetrical distribution with a tail to the left has a negative skew and a distribution with a tail to the right has a positive skew |
Enable HSVL Stats / enableHSV | Boolean | Off | When checked HSVL statistics will be computed when analysing |
HSVL / hsvlStats | Category | - | |
HSVL Min / hsvlMin | Color | 0, 0, 0, 0 | Minimum value |
HSVL Max / hsvlMax | Color | 0, 0, 0, 0 | Maximum value |
HSVL Mean / hsvlMean | Color | 0, 0, 0, 0 | Mean value |
Enable HSVL Advanced Stats / hsvlEnableExtra | Boolean | Off | When checked, the Standard Deviation, Kurtosis and Skewness are also analysed |
HSVL S.dev. / hsvlSdev | Color | 0, 0, 0, 0 | Standard deviation: quantifies the variability of the data |
HSVL Kurtosis / hsvlKurtosis | Color | 0, 0, 0, 0 | Whether the shape of the data distribution matches the Gaussian distribution: a value of 0 means it is a gaussian distribution. A flat distribution has a negative value, whereas a peaked distribution has a positive kurtosis |
HSVL Skewness / hsvlSkewness | Color | 0, 0, 0, 0 | How symmetrical the distribution is: A value of 0 indicates a symmetrical distribution, an asymmetrical distribution with a tail to the left has a negative skew and a distribution with a tail to the right has a positive skew |
Enable Luminance Stats / enableLuminance | Boolean | Off | When checked Luminance statistics will be computed when analysing |
Luminance / lumaStats | Category | - | |
Luminance Mode / lumaFormula | Choice | Rec. 709 | Luminance formula used when mode is not None - Rec. 709 - Rec. 2020 - ACES ap-0 - ACES ap-1 - CCIR 601 - Average: Average of intensities - Max: Maximum of intensities |
Min. Luminance Pixel / minLuminancePixelColor | Float | 0 | RGB values of the pixel with the minimum luminance |
Min. Luminance Position / minLuminancePixelPos | Float 2D | 0, 0 | Position of the pixel with the minimum luminance |
Max. Luminance Pixel / maxLuminancePixelColor | Float | 0 | RGB values of the pixel with the maximum luminance |
Max. Luminance Position / minLuminancePixelPos 2 | Float 2D | 0, 0 | Position of the pixel with the maximum luminance |
Auto Analyze / enableAutoAnalysis | Boolean | On | When checked, analysis will be performed on the fly when during playback or scrubbing the timeline. When unchecked, analysis has to be started manually with the Analyze Frame or Analyze Layer Range buttons |
Override Keyframes / autoAnalysisOverride | Boolean | Off | Only relevant for auto analysis: When checked, analysis will always override existing keyframes, whereas if uncheked, only non existing keyframes will be computed |
Analyze Frame / analyzeFrameButton | Button | Off | |
Analyze Layer Range / analyzeRangeButton | Button | Off | |
Light/Shadow Colorspace / input_colorspace | Choice | Project Display Space | Colorspace in which the pixel color values are expressed in the baked keyframes - Project Working Space: The color is assumed to be expressed in the project working space - Project Display Space: The color is assumed to be expressed in the project display space |