Method and system for improving the appearance of deinterlaced chroma formatted video

A method of generating an improved 4:2:2 chroma comprising:

• regenerating 4:2:0 chroma from a 4:2:2 chroma;
• weaving said 4:2:0 chroma to produce a 4:2:0 chroma frame;
• interpolating said 4:2:0 chroma frame to generate said adjusted 4:2:2 chroma;
• and
• adding a determined first level of said 4:2:2 chroma to a determined second level of said adjusted 4:2:2 chroma.

A system for generating improved 4:2:2 chroma pixels comprising:

• a 4:2:2 to 4:2:0 chroma regenerator for converting 4:2:2 chroma to 4:2:0 chroma;
• and
• a 4:2:0 to 4:2:2 chroma generator that weaves pixels from top and bottom fields of 4:2:0 chroma to generate a 4:2:0 chroma frame, said 4:2:0 chroma frame subsequently used for interpolating one or more pixels to generate an adjusted 4:2:2 chroma frame, wherein said 4:2:2 to 4:2:0 chroma regenerator generates chroma values of top field 4:2:0 chroma pixels, α and β, using corresponding chroma values from top field 4:2:2 chroma pixels, A and B, by way of solving the following simultaneous equations:
• A
• =
• 5
• 8
• ⁢
• α
• +
• 3
• 8
• ⁢
• β
• ,
• ⁢
• B
• =
• 1
• 8
• ⁢
• α
• +
• 7
• 8
• ⁢
• β
• to yield the following equations:
• α
• =
• 7
• 4
• ⁢
• A
• -
• 3
• 4
• ⁢
• B
• ,
• ⁢
• β
• =
• 5
• 4
• ⁢
• B
• -
• 1
• 4
• ⁢
• A
• .

A system for generating improved 4:2:2 chroma pixels comprising:

• a 4:2:2 to 4:2:0 chroma regenerator for converting 4:2:2 chroma to 4:2:0 chroma;
• and
• a 4:2:0 to 4:2:2 chroma generator that weaves pixels from top and bottom fields of 4:2:0 chroma to generate a 4:2:0 chroma frame, said 4:2:0 chroma frame subsequently used for interpolating one or more pixels to generate an adjusted 4:2:2 chroma frame, wherein said 4:2:2 to 4:2:0 chroma regenerator generates chroma values of bottom field 4:2:0 chroma pixels, ε and φ, using corresponding chroma values from bottom field 4:2:2 chroma pixel values, C and D, by way of solving the following simultaneous equations:
• C
• =
• 7
• 8
• ⁢
• ɛ
• +
• 1
• 8
• ⁢
• ϕ
• ,
• ⁢
• D
• =
• 3
• 8
• ⁢
• ɛ
• +
• 5
• 8
• ⁢
• ϕ
• to yield the following equations:
• ɛ
• =
• 5
• 4
• ⁢
• C
• -
• 1
• 4
• ⁢
• D
• ,
• ⁢
• ϕ
• =
• 7
• 4
• ⁢
• D
• -
• 3
• 4
• ⁢
• C
• .

A system for generating improved 4:2:2 chroma pixels comprising:

• a 4:2:2 to 4:2:0 chroma regenerator for converting 4:2:2 chroma to 4:2:0 chroma;
• and
• a 4:2:0 to 4:2:2 chroma generator that weaves pixels from top and bottom fields of 4:2:0 chroma to generate a 4:2:0 chroma frame, said 4:2:0 chroma frame subsequently used for interpolating one or more pixels to generate an adjusted 4:2:2 chroma frame, wherein said 4:2:2 to 4:2:0 chroma regenerator generates chroma values from top field 4:2:0 chroma pixels α and β, using corresponding top field 4:2:2 chroma pixel values associated with pixels A, A+1, B, and B−1 by way of utilizing the following equations:
• α
• =
• 3
• 4
• ⁢
• B
• -
• 1
• +
• 1
• 4
• ⁢
• A
• β
• =
• 3
• 4
• ⁢
• B
• +
• 1
• 4
• ⁢
• A
• +
• 1
• ,
• wherein said B−1 denotes a pixel with spatial relationship corresponding to B, said B−1 vertically positioned at one A/B pixel pair above B, and said A+1 denotes a pixel with spatial relationship corresponding to A, said A+1 vertically positioned at one A/B pixel pair below A.

A system for generating improved 4:2:2 chroma pixels comprising:

• a 4:2:2 to 4:2:0 chroma regenerator for converting 4:2:2 chroma to 4:2:0 chroma;
• and
• a 4:2:0 to 4:2:2 chroma generator that weaves pixels from top and bottom fields of 4:2:0 chroma to generate a 4:2:0 chroma frame, said 4:2:0 chroma frame subsequently used for interpolating one or more pixels to generate an adjusted 4:2:2 chroma frame, wherein said 4:2:2 to 4:2:0 chroma regenerator generates chroma values from bottom field 4:2:0 chroma pixels ε and φ, using corresponding top field 4:2:2 chroma pixel values associated with pixels C, C+1, D, and D−1 by utilizing the following equations:
• ɛ
• =
• 1
• 4
• ⁢
• D
• -
• 1
• +
• 3
• 4
• ⁢
• C
• ϕ
• =
• 1
• 4
• ⁢
• D
• +
• 3
• 4
• ⁢
• C
• +
• 1
• ,
• wherein said D−1 denotes a pixel with spatial relationship corresponding to D, said D−1 vertically positioned at one C/D pixel pair above D, and said C+1 denotes a pixel with the spatial relationship corresponding to C, said C+1 vertically positioned at one C/D pixel pair below C.

A system for generating improved 4:2:2 chroma pixels comprising:

• a 4:2:2 to 4:2:0 chroma regenerator for converting 4:2:2 chroma to 4:2:0 chroma;
• and
• a 4:2:0 to 4:2:2 chroma generator that weaves pixels from top and bottom fields of 4:2:0 chroma to generate a 4:2:0 chroma frame, wherein said 4:2:0 to 4:2:2 chroma generator computes said adjusted 4:2:2 chroma by using the following equations:
• A
• new
• =
• 1
• 4
• ⁢
• ɛ
• +
• 3
• 4
• ⁢
• α
• ,
• ⁢
• C
• new
• =
• 3
• 4
• ⁢
• α
• +
• 1
• 4
• ⁢
• ϕ
• ,
• ⁢
• B
• new
• =
• 1
• 4
• ⁢
• α
• +
• 3
• 4
• ⁢
• ϕ
• ,
• ⁢
• D
• new
• =
• 3
• 4
• ⁢
• ϕ
• +
• 1
• 4
• ⁢
• β
• ,
• wherein said values Anew, Bnew, Cnew, and Dnew correspond to said adjusted 4:2:2 chroma, said values Anew, Bnew, Cnew, and Dnew vertically interpolated from said values α, β, ε, and φ.

A system for generating improved 4:2:2 chroma pixels comprising:

• a 4:2:2 to 4:2:0 chroma regenerator for converting 4:2:2 chroma to 4:2:0 chroma;
• a 4:2:0 to 4:2:2 chroma generator that weaves pixels from top and bottom fields of 4:2:0 chroma to generate a 4:2:0 chroma frame, said 4:2:0 chroma frame subsequently used for interpolating one or more pixels to generate an adjusted 4:2:2 chroma frame;
• and
• a hardware and/or software used for blending said adjusted 4:2:2 chroma to said 4:2:2 chroma, said blending used to generate an improved 4:2:2 chroma.

A system for generating an improved 4:2:2 chroma comprising:

• hardware operable for, at least:
• receiving a 4:2:2 chroma;
• inputting said 4:2:2 chroma into a 4:2:2 to 4:2:0 chroma regenerator;
• selecting an algorithm to be used by said 4:2:2 to 4:2:0 chroma regenerator;
• using said algorithm to regenerate 4:2:0 chroma;
• weaving pixels from top and bottom fields of said 4:2:0 chroma to generate a 4:2:0 chroma frame;
• interpolating values provided by said 4:2:0 chroma frame to generate an adjusted 4:2:2 chroma;
• inputting said adjusted 4:2:2 chroma and said 4:2:2 chroma into a blending system used for blending two inputs;
• determining a first amount of said adjusted 4:2:2 chroma and a second amount of said 4:2:2 chroma for said blending;
• and
• adding said first and second amounts to generate an improved 4:2:2 chroma.

A system for processing a received 4:2:2 chroma formatted video to improve the appearance of displayed video comprising:

• hardware operable for, at least:
• identifying undesirable pixels of said 4:2:2 chroma that are vertically interpolated using chroma associated with vertically distant 4:2:0 pixels;
• and
• substituting chroma values associated with said undesirable pixels of said 4:2:2 chroma using a weighted average of one or more chroma values associated with one or more desirable pixels associated with said 4:2:2 chroma.

A system for generating an improved 4:2:2 chroma comprising:

• hardware operable for, at least:
• regenerating 4:2:0 chroma from a 4:2:2 chroma;
• weaving said 4:2:0 chroma to produce a 4:2:0 chroma frame;
• interpolating said 4:2:0 chroma frame to generate said adjusted 4:2:2 chroma;
• and
• adding a determined first level of said 4:2:2 chroma to a determined second level of said adjusted 4:2:2 chroma.